Skip to Content

Join the 'Acne' group to help and get support from people like you.

Acne News

Related terms: Acne Vulgaris, Blackheads, Cystic acne, Pimples, Whiteheads, Zits, Breakouts

Health Tip: Discuss Acne Products With a Dermatologist

Posted 10 days ago by Drugs.com

-- If you're using acne products, you should take precautions to prevent a rare but serious allergic reaction. The American Academy of Dermatology offers this advice: See your dermatologist to discuss acne treatments that you'd like to use. Always consult a dermatologist before using an acne treatment if you've had an allergic reaction before. Ask the doctor about how to safely test acne treatments at home. Read more

Related support groups: Acne, Accutane, Rosacea, Isotretinoin, Claravis, Epiduo, Acne Treatment, Benzoyl Peroxide, Amnesteem, Duac, Benzaclin, Sotret, Acanya, Zenatane, Oxy-10, Benzoyl Peroxide/Clindamycin, Adapalene/Benzoyl Peroxide, Absorica, Benzac, Acne-Clear

Contraception Safety Program for Acne Drug Failing in Canada

Posted 25 Apr 2016 by Drugs.com

MONDAY, April 25, 2016 – A Canadian program to prevent pregnancy in women who are taking the acne drug isotretinoin is failing because many women do not follow the program's recommendations, a new study finds. Isotretinoin increases the risk of birth defects and miscarriages, the researchers explained. First marketed as Accutane, isotretinoin is now sold under various brand names and aimed at patients with severe acne. The Canadian program recommends informed written consent, two negative pregnancy tests before beginning treatment with isotretinoin, and the use of two reliable birth control methods while taking the drug. The United States has similar safeguards in place. In 2005, the U.S. Food and Drug Administration approved a program requiring doctors to enroll patients who take isotretinoin in a national registry to guard against serious side effects that had been linked to the ... Read more

Related support groups: Birth Control, Contraception, Acne, Emergency Contraception, Accutane, Postcoital Contraception, Rosacea, Isotretinoin, Claravis, Amnesteem, Hydrocephalus, Sotret, Zenatane, Absorica, Brain Anomalies incl Congenital, Myorisan

Misconceptions About Acne Still Common

Posted 4 Mar 2016 by Drugs.com

FRIDAY, March 4, 2016 – There are still plenty of negative and mistaken beliefs about people with acne, a new study finds. Researchers showed photos of acne and several common skin conditions to study participants and asked them their views about each condition. More than 62 percent said they were upset by the photos of acne. And more than 80 percent said they felt pity toward people with acne, the research revealed. Of even greater concern, more than two-thirds said they would be ashamed if they had acne and would find someone with acne unattractive. Forty-one percent said they would be uncomfortable being seen in public with someone with acne, and more than 44 percent said they would be uncomfortable touching a person with acne, the findings showed. Many of the study participants had common misconceptions about acne. Fifty-five percent mistakenly believed acne was caused by poor ... Read more

Related support groups: Acne, Clindamycin, Accutane, Tretinoin, Rosacea, Retin-A, Isotretinoin, Claravis, Epiduo, Cleocin, Benzoyl Peroxide, Acne Treatment, Adapalene, Salicylic Acid, Differin, Finacea, Aczone, Compound W, Amnesteem, Benzaclin

Allergan Announces FDA Approval of Aczone (dapsone) Gel, 7.5% for Treatment of Acne Vulgaris

Posted 28 Feb 2016 by Drugs.com

DUBLIN, Feb. 25, 2016 /PRNewswire/ – Allergan plc (NYSE:AGN), a leading global pharmaceutical company, today announced that the Company has received approval from the U.S. Food and Drug Administration (FDA) to market Aczone (dapsone) Gel, 7.5%, a new prescription topical treatment for acne in patients 12 years of age and older. Aczone Gel, 7.5% delivers proven efficacy to treat both inflammatory and non-inflammatory acne, with a new concentration of dapsone in just once-a-day application. "For the Aczone Gel, 7.5% pivotal trials, we studied 4,340 acne patients, demonstrating efficacy and tolerability. The new FDA product approval also offers just once-daily dosing and a new pump delivery system," said David Nicholson, Executive Vice President and President of Global R&D Brands at Allergan. "As part of Allergan's commitment to the medical dermatology space, we have truly raised the bar ... Read more

Related support groups: Acne, Dapsone, Aczone

Double Up on Acne Treatments, New Guidelines Say

Posted 23 Feb 2016 by Drugs.com

TUESDAY, Feb. 23, 2016 – Combining treatments is the best way to combat acne, new guidelines from the American Academy of Dermatology state. "There are a variety of effective treatments available for acne, and dermatologists have found that combining two or more treatments is the best option for the majority of patients," Dr. Andrea Zaenglein, co-chair of the guidelines committee, said in an academy news release. "Recommended treatments include topical [skin] therapy, antibiotics, isotretinoin [Accutane is one brand] and oral contraceptives," she added. Acne affects up to 50 million Americans a year, according to the academy. When using antibiotics to treat moderate to severe acne, prescription skin medications should be used at the same time. After patients complete a course of antibiotics, they should continue using topical, or skin, therapy to manage their acne, according to the ... Read more

Related support groups: Plan B, Acne, Mirena, Sprintec, NuvaRing, Implanon, Provera, Nexplanon, Depo-Provera, Doxycycline, Ortho Tri-Cyclen, Tri-Sprintec, Yasmin, Microgestin Fe 1/20, Clindamycin, Loestrin 24 Fe, Ortho Evra, Plan B One-Step, TriNessa, Lutera

Health Tip: Acne Has Lasting Effects

Posted 15 Dec 2015 by Drugs.com

-- Acne may be most visible on the skin, but for many people, its effects are greater than just temporary blemishes. Acne can lead to these physical and emotional issues, says the American Academy of Dermatology: Developing poor self-esteem and isolation. Developing depression, which can become severe. Developing dark spots that remain after acne has cleared. These may last for months or years. Developing scars. Read more

Related support groups: Acne, Rosacea, Retin-A, Epiduo, Acne Treatment, Benzoyl Peroxide, Adapalene, Salicylic Acid, Differin, Finacea, Aczone, Compound W, Soriatane, Benzaclin, Duac, Duofilm, Atralin, Ziana, Acanya, Retin A Micro Gel

Many Patients With Acne Take Antibiotics Too Long: Study

Posted 30 Oct 2015 by Drugs.com

FRIDAY, Oct. 30, 2015 – Many patients with severe acne remain on antibiotics too long before they are prescribed more effective medication, researchers say. A team led by Dr. Seth Orlow, chair of dermatology at NYU Langone Medical Center in New York City, reviewed the medical records of 137 patients over the age of 12. All were treated for severe acne at Langone between 2005 and 2014. On average, the patients were kept on antibiotics for 11 months before their doctors decided the antibiotics were not effective. Patients were then switched to the acne medication isotretinoin (brand name Accutane). The study also found that it took an average of nearly six months from the time doctors first mentioned Accutane until patients began taking the drug. Reasons for the long delay included strict controls placed on Accutane due to its risk of causing birth defects, and concerns about other ... Read more

Related support groups: Acne, Accutane, Minocycline, Isotretinoin, Claravis, Solodyn, Amnesteem, Sotret, Zenatane, Absorica, Minocin, Arestin, Myorisan, Dynacin, Myrac, Ximino

Psoriasis, Cold Sores Most Stigmatized Skin Disorders: Survey

Posted 9 Oct 2015 by Drugs.com

FRIDAY, Oct. 9, 2015 – Psoriasis and cold sores top the list of stigmatized skin conditions, a new survey indicates, but experts say much of the ill will directed at sufferers is misguided. Surveying 56 people, Boston researchers found that nearly 61 percent wrongly thought psoriasis – which produces widespread, scaly red skin lesions – looked contagious, and about nine in 10 said they would pity a person who had it. About four in 10 said herpes simplex, or cold sore, is the most bothersome skin condition. "We knew from other studies that psoriasis seemed to be more stigmatizing than other skin diseases, [and] we did this study to try to find out why," said study author Dr. Alexa Kimball, a dermatology professor at Harvard Medical School. "We suspected that the fact that it looked infectious could be part of the reason people reacted strongly to it, but we didn't expect that reaction ... Read more

Related support groups: Acne, Psoriasis, Eczema, Cold sores, Warts, Rosacea, Plaque Psoriasis, Vitiligo, Tinea Versicolor, Herpes Simplex Labialis, Minor Skin Irritation, Minor Skin Conditions

Health Tip: Shave Properly

Posted 18 Sep 2015 by Drugs.com

-- Taking extra care while shaving can help prevent nicks, cuts and ingrown hair. The American Academy of Dermatology advises: To soften the hair and skin, shower or wet the skin before shaving. Lather with a shaving gel or cream. Use a fresh blade. A disposable blade should be tossed after 5 to 7 uses. Shave in the direction of the growing hair. Acne-prone shavers should try both electric and disposable blades to see which is less irritating. Shave carefully with a fresh blade, using light pressure. Read more

Related support groups: Acne

Neglecting Teen Health May Lead to Bigger Problems as Adults

Posted 17 Aug 2015 by Drugs.com

MONDAY, Aug. 17, 2015 – Nearly one in five teens has specific health care needs that are not receiving attention, and this may set them up for poorer physical and mental health in adulthood, a new study contends. "Previous research had shown that lack of medical care in this age group is associated with poor health and higher risk behaviors at the time. But, it wasn't known that these poor health outcomes persisted into adulthood," said lead author Dr. Dougal Hargreaves, a pediatrician and health services researcher at University College London, England, and at Boston Children's Hospital. The study was published online Aug. 17 in the journal Pediatrics. The researchers analyzed data from 14,800 participants in a long-term U.S. study of teen and adult health. The teens first answered questions in 1994-1995 when they were, on average, 16 years old. Then they responded in another ... Read more

Related support groups: Depression, Diabetes, Type 2, Obesity, Acne, Asthma, Asthma - Maintenance, Asthma - Acute, Allergic Asthma, Vaccination and Prophlaxis

Experimental Treatment Uses Nitric Oxide for Acne

Posted 31 Jul 2015 by Drugs.com

FRIDAY, July 31, 2015 – There's no shortage of products out there that claim to treat the pimples that so often plague teen skin, but your body may already be making an effective treatment that just needs a little tweaking from science, a new study suggests. The treatment is nitric oxide, a substance produced and used throughout the human body. But, nitric oxide's benefits are usually short-lived, researchers explained. And, that's where science comes in. By slowing the release of nitric oxide using tiny substances (nanoparticles), researchers were able to kill the bacteria associated with acne. The nanoparticles also inhibited the inflammation that causes the large, painful pimples associated with inflammatory acne. The study was published recently in the Journal of Investigative Dermatology. "Our understanding of acne has changed dramatically in the last 15-20 years," study co-author ... Read more

Related support groups: Acne, Rosacea, Nitric Oxide, INOmax

Galderma Receives FDA Approval for Epiduo Forte (adapalene and benzoyl peroxide) for Acne

Posted 24 Jul 2015 by Drugs.com

FT. WORTH, Texas – July 16, 2015 -Galderma Laboratories, L.P. announced today that the U.S. Food and Drug Administration (FDA) approved antibiotic-free Epiduo Forte (adapalene and benzoyl peroxide) Gel, 0.3%/2.5%, for the once-daily, topical treatment of acne vulgaris. Acne is the most common skin condition in the United States, affecting more than 40 to 50 million people. Epiduo Forte Gel is the first combination of these strengths of the retinoid, adapalene, and benzoyl peroxide, developed for the moderate to severe acne population." As the industry leader in dermatology, Galderma recognizes the need for innovative acne medications across a spectrum of acne severities,” said Todd Zavodnick, President and General Manager of Galderma Laboratories, L.P.“ The FDA approval of Epiduo Forte Gel has helped us expand on our robust acne franchise to deliver a safe, effective and antib ... Read more

Related support groups: Acne, Benzoyl Peroxide, Adapalene, Adapalene/Benzoyl Peroxide, Epiduo Forte

Could a Vitamin Play a Role in Acne Outbreaks?

Posted 24 Jun 2015 by Drugs.com

WEDNESDAY, June 24, 2015 – New research suggests that high levels of vitamin B12 may affect germ activity in certain people, boosting the odds that they'll develop acne. However, it's too early to say if anyone should cut down on their vitamin B12 intake from food or vitamins to avoid getting pimples, researchers said. "I don't think we have studied enough to suggest that," said study leader Huiying Li, assistant professor of molecular & medical pharmacology at the University of California, Los Angeles. Still, the research provides insight into not only vitamin B12 but also genetic activity that could prompt pimples. "There are certain genes that could potentially influence whether people have acne breakouts or not," she said. "These genes could be targets of future drug treatment." The study appears in the June 24 issue of Science Translational Medicine. A deficiency in vitamin B12 ... Read more

Related support groups: Acne, Rosacea, Retin-A, Epiduo, Benzoyl Peroxide, Acne Treatment, Adapalene, Salicylic Acid, Differin, Finacea, Aczone, Compound W, Benzaclin, Duac, Duofilm, Atralin, Ziana, Retin A Micro Gel, Acanya, Oxy-10

Athletes Need to Guard Against Skin Woes

Posted 24 Mar 2015 by Drugs.com

TUESDAY, March 24, 2015 – Sprains and fractures aren't the only hazards athletes face. Certain skin problems are also common among sports enthusiasts. The five skin conditions most often seen in athletes are blisters; turf burn (abrasions from falls on an artificial surface); athlete's foot (a fungal infection); sun exposure, and a type of acne called acne mechanica, according to the American Academy of Dermatology in their news release. "Athletes who are aware of these five common issues can take action to prevent the vast majority of dermatologic problems they may encounter," said Dr. Brian Adams in the academy release. He is professor and chair of dermatology at the University of Cincinnati College of Medicine. Blisters are caused by heat, moisture and friction between the skin and shoes. Adams said the best way to prevent blisters is to wear synthetic, moisture-wicking socks, which ... Read more

Related support groups: Acne, Skin Rash, Skin Infection, Skin and Structure Infection, Tinea Pedis

Many Acne Patients Don't Take Their Meds, Survey Shows

Posted 20 Mar 2015 by Drugs.com

FRIDAY, March 20, 2015 – Many acne patients do not take all their recommended medications, a small new study suggests. Researchers surveyed 143 acne patients and found that 27 percent of them did not obtain or use all of the prescription and over-the-counter products suggested by their dermatologists. "Non-adherence is a pervasive problem in all of medicine, particularly when treating chronic conditions such as acne," study author Dr. Steven Feldman, a professor of dermatology at Wake Forest Baptist Medical Center in Winston-Salem, N.C., said in a Wake Forest news release. "A previous study reported a 10 percent primary non-adherence rate for acne patients, so we were surprised that what we found was more than twice that," Feldman added. In this latest study, patients who were prescribed two medications were most likely to not get or use a medication (40 percent), compared with 31 ... Read more

Related support groups: Acne

Page 1 2 3 Next

Ask a Question

Further Information

Related Condition Support Groups

Rosacea, Dermatological Disorders

Related Drug Support Groups

doxycycline, Ortho Tri-Cyclen, Tri-Sprintec, Yasmin, Microgestin Fe 1 / 20, cephalexin, Loestrin 24 Fe, Bactrim, TriNessa, view more... Accutane, Yaz, Keflex, spironolactone, Ocella, minocycline, Junel Fe 1 / 20, Bactrim DS, Gianvi, tetracycline, Beyaz, Gildess Fe 1 / 20, Necon 1 / 35, Tri-Previfem, Retin-A, isotretinoin, sulfur, Microgestin 1 / 20, Claravis, Microgestin FE 1.5 / 30, Epiduo, Milk of Magnesia, Doryx, Solodyn, sulfamethoxazole / trimethoprim, generess fe, Acne Treatment, benzoyl peroxide, adapalene, Septra, salicylic acid, Aldactone, Femhrt, Differin, Microgestin 1.5 / 30, Compound W, Aczone, Septra DS, Amnesteem, ethinyl estradiol / norgestimate, Tri-Linyah, SMZ-TMP DS, Phillips' Milk of Magnesia, Tazorac, Doxy Lemmon, ethinyl estradiol / norethindrone, Monodox, Duac, Estarylla, Benzaclin, Sulfatrim, Loestrin 1 / 20, Junel Fe 1.5 / 30, magnesium hydroxide, Sotret, Atralin, Tri-Estarylla, Ziana, Ortho-Novum 7 / 7 / 7, Vibramycin, Acanya, Retin A Micro Gel, Adoxa, Altabax, Zenatane, Oxy-10, sulfacetamide sodium / sulfur, drospirenone / ethinyl estradiol, Femcon FE, Clarifoam EF, A / T / S, tea tree, Doxy 100, Ortho-Novum 1 / 35, Loryna, Syeda, adapalene / benzoyl peroxide, benzoyl peroxide / clindamycin, Fostex, Necon 7 / 7 / 7, C / T / S, Nortrel 7 / 7 / 7, Loestrin Fe 1 / 20, Avar, Minocin, Tilia Fe, Junel 1 / 20, lavender, Mono-Linyah, Absorica, resorcinol, azelaic acid, Nortrel 1 / 35, Leena, Alyacen 1 / 35, Benzac, Acne-Clear, triclosan, tazarotene, Rosula, Estrostep Fe, Veltin, Benzac AC, Eryderm, Sumadan, Tri-Legest Fe, Acticlate, Cotrim, Fostex Bar 10%, Loestrin Fe 1.5 / 30, Vibra-Tabs, Norinyl 1+35, Triaz, Brevoxyl, Vestura, Modicon, TriNessa Lo, Gildagia, benzoyl peroxide / erythromycin, Evoclin, Ovcon 35, T / Gel, SAStid, Cyclafem 1 / 35, Fostex Medicated, salicylic acid / sulfur, Plexion, Clean & Clear Dual Action, Vanoxide-HC, Co-trimoxazole, H2O Acne Spot Treatment, ZoDerm, Clenia Foaming Wash, Obagi, Vanoxide, Avita, Benzamycin Pak, Brevoxyl Creamy Wash, Loroxide, Azelex, Occlusal-HP, Tri-Norinyl, Myorisan, Clindets, Plexion Cleansing Cloths, Avar Cleanser, Rosac, Ovcon 35 Fe, Doxy-Caps, Salex, Clindagel, Benzamycin, Acnotex, Akne-Mycin, Ery Pads, Clearskin, Zartan, Bethaprim, Junel 1.5 / 30, Cotrim DS, Avar Gel, hexachlorophene, NuOx, Propa PH, Clearasil 3-In-1 Cleanser, PanOxyl, Cleanse & Treat, Doxy 200, Cleocin T, Oscion, Brevoxyl Acne Wash Kit, Zeosa, Z-Clinz 5, Prascion, Bensulfoid, R A Acne, Acnomel, Retin-A and Renova, Lavoclen-8, ZoDerm Redi-Pads, Rosac Wash, Lavoclen-4, Sumycin 250, Stieva-A, Prascion RA, Achromycin V, Z-Clinz 10, Clenia Emollient Cream, Pernox Regular, Finevin, Pernox Lotion, Oraxyl, Stieva-A Forte, Novacet, Pernox Lemon, Sumadan XLT, Clindacin ETZ, Mondoxyne NL, Targadox, Cleeravue-M, Sastid Soap, Epiduo Forte, Sulfacet-R, Plexion Cleanser, Avar-E Green, Avar-E Emollient, Rosaderm Cleanser, Zetacet Wash, Sulfatol, Suphera, Prascion Cleanser, Avar Green, Nicosyn, Rosula Cleanser, Rosanil Cleanser, Sebulex Shampoo, Sebex, Prascion FC Cloths, Salacyn, Briellyn, Clindacin P, Tri-Legest, Sulfoam, BenzEFoam Ultra, Sulfatol Cleanser, BPO Gel, Binora, Sumaxin TS, Delos, Acetoxyl, SE BPO, Rosula AQ, Acnex, Avar-E, BPS Gel, Sulfatol SS, Pledgaclin, Clindacin PAC, Zenchent Fe, Garimide, Ximino, Morgidox, Pacnex HP, Tri-Lo-Marzia, Sulfacleanse 8 / 4, Acnevir, Sumaxin CP, Rezamid, Sulforcin, Benzagel-10, Benzagel-5, Ocudox, Alyacen 7 / 7 / 7, Wera, Avar LS, Fabior, Wymzya Fe, Zencia Wash, Cyclafem 7 / 7 / 7, Topisulf, Riax, Zacare, BP 10-Wash, SoluCLENZ Rx, Resinol, Neuac, Benzashave, Rosula Clarifying Wash, Rosula CLK, Salex Cream, Adoxa CK, Adoxa TT, DermalZone, Peroderm, Thera-Sal, Salkera, Breze, Topicycline, Keftab, Sumaxin, SulZee Wash, Durasal, Bencort, Benprox, BP Wash, Avar-E LS, Cerisa Wash, Inova 8 / 2, Inova 4 / 1, Virti-Sulf, Avidoxy, Salvax, Sulfatol C, Pacnex, BenzEFoam, Onexton, Aliclen, Phisoderm Acne Mask, Desquam-E, Panoxyl AQ 2.5, Desquam-X 10, Persa-Gel, Benzac W, Panoxyl AQ 5, Persa-Gel W, Desquam-X 5, Panoxyl 5, Tretin-X, Altinac, Ex-Lax Milk of Magnesia, Panixine, Biocef, Clinda-Derm, Clindets Pledget, Vitinoin, Retisol-A, ClindaReach Pledget, Benzagel, Clearplex, Fostex Wash 10%, Fostex Gel 10%, Neutrogena Acne Mask, Benoxyl 10, Clear By Design, Oxy Vanishing Gel, Benzagel Wash, Clinac BPO, Seba-Gel, Acne-10, Zeroxin, Peroxin A 10, Panoxyl AQ 10, Panoxyl 10, Desquam-X Wash, Benoxyl 5, Peroxin A, Del-Aqua, Ben-Aqua, Tetracon, Emtet-500, Emgel, EthexDERM BPW, adapalene / clindamycin, drospirenone / ethinyl estradiol / levomefolate calcium, Dulcolax Milk of Magnesia, Dynacin, Hydrisalic, Stridex Body Focus, Myrac, sulfacetamide sodium / sulfur / urea, benzoyl peroxide / sodium hyaluronate, benzoyl peroxide / sulfur, benzoyl peroxide / salicylic acid, benzoyl peroxide / hydrocortisone, benzoyl peroxide / urea, clindamycin / tretinoin, borage, retapamulin, resorcinol / sulfur, Meted, Sebulex, Doxy-D, Brevoxyl-8, Brevoxyl-4, Zetacet, Panmycin, Robitet 500, Tetracap, Brodspec, Ala-Tet, Plexion TS, Plexion SCT, Fostex BPO, Emcin Clear, Sumycin, Stridex Maximum Strength, Tinamed Plantar, Sulfoxyl Strong, Sulfoxyl Regular, Pernox, Ethexderm, Oxy 10 Balance, Erymax, Erythra-Derm, T-Stat, Staticin, Theramycin, E-Solve 2, Theramycin Z, Ery-Sol, Romycin, Erygel, Erycette, Oxy Daily Cleansing, Neutrogena T / Sal, Phisoderm Acne Therapy, Oxy Face Scrub, Akurza, Cetaphil Antibacterial, Salitop, Scalpicin Scalp Relief, Brevicon, Genora 0.5 / 35, Sulpho-Lac, Nortrel 0.5 / 35, Ortho-Novum 10 / 11, Jenest, Sulmasque, Liquimat Light, Fostril, Sulpho-Lac Soap, Liquimat Medium, Ovcon 50, Necon 10 / 11, Norethin 1 / 35 E, Genora 1 / 35, Nelova 0.5 / 35, Loestrin 21 1 / 20, Loestrin 21 1.5 / 30, Necon 0.5 / 35, Nelova 1 / 35, Nelova 10 / 11, Oxy Triple Action, Clearasil Ice Wash, Panscol, Oxy Spot Treatment, Lavoclen-8 Creamy Wash, Lavoclen-4 Creamy Wash, Off-Eazy, Salactic Film, Sal-Acid Plasters, Trans-Ver-Sal, Sal-Plant Gel, NeoBenz Micro SD, Inova, Benziq LS, Oxy Balance, Zaclir, Benziq, Benziq Wash, Oscion Cleanser, Panoxyl Aqua Gel, NeoBenz Micro, DHS Salicylic Acid 3%, Stri-Dex, Adasept Acne, Sebasorb, Propa PH Acne Mask, P & S, Trans-Plantar, Acnisal, Clearasil Acne Fighting, Verrugon Complete, Bazuka Extra Strength, Salac, Oxy Clean Medicated, Stri-Dex Face Wash, Stri-Dex Clear Gel, Stri-Dex Sensitive Skin, Stri-Dex Dual Textured, Stri-Dex Super Scrub, Propa PH Maximum Strength, X-Seb, Sebucare, Sulfo-Lo