ungrouped: Paronychia Acute Chronic Chevron nail Congenital onychodysplasia of the index fingers Green nails Half and half nails Hangnail Hapalonychia Hook nail Ingrown nail Lichen planus of the nails Longitudinal erythronychia Malalignment of the nail plate Median nail dystrophy Mees' lines Melanonychia Muehrcke's lines Nail–patella syndrome Onychoatrophy Onycholysis Onychomadesis Onychomatricoma Onychomycosis Onychophosis Onychoptosis defluvium Onychorrhexis Onychoschizia Platonychia Pincer nails Plummer's nail Psoriatic nails Pterygium inversum unguis Pterygium unguis Purpura of the nail bed Racquet nail Red lunulae Shell nail syndrome Splinter hemorrhage Spotted lunulae Staining of the nail plate Stippled nails Subungual hematoma Terry's nails Twenty-nail dystrophy


Children should always ask parents for permission before providing any personal information online. No information should be submitted to Acne Studios by any person under the age of 16 without the consent of a parent or guardian. Unless otherwise disclosed during collection, Acne Studios does not knowingly collect any personally identifiable information about persons under the age of 16, provide any personally identifying information about such persons under the age of 16, regardless of its source, to third parties, and does not knowingly use such information for any marketing or promotional purposes.
Baby acne generally lasts longer with breast-fed babies, since the same residual, oil-triggering hormones that the baby was exposed to in the uterus can come through the mother's milk, too. As a result, it often begins clearing up as your baby is weened off of breast-milk. It may even clear up sooner if your baby's oil glands have matured enough to handle the hormones before then.
Salicylic acid is a topically applied beta-hydroxy acid that stops bacteria from reproducing and has keratolytic properties.[131][132] It opens obstructed skin pores and promotes shedding of epithelial skin cells.[131] Salicylic acid is known to be less effective than retinoid therapy.[20] Dry skin is the most commonly seen side effect with topical application, though darkening of the skin has been observed in individuals with darker skin types.[1]
Genetics is thought to be the primary cause of acne in 80% of cases.[2] The role of diet and cigarette smoking is unclear, and neither cleanliness nor exposure to sunlight appear to play a part.[2][13][14] In both sexes, hormones called androgens appear to be part of the underlying mechanism, by causing increased production of sebum.[5] Another frequent factor is excessive growth of the bacterium Cutibacterium acnes, which is normally present on the skin.[15]
If you have subscribed to membership with Acne Studios, we will share your contact details and information on previous purchases and shopping preferences with our affiliated companies both inside and outside of the EU/EEA (please see further under section 4) Please note that countries outside of the EU/EEA may not provide an adequate level of protection for your personal data. Acne Studios has however taken appropriate safeguards to ensure that the receiving parties of your data in countries outside of the EU/EEA shall provide an adequate protection of your data. Such safeguards may be that the receiving party has joined the Privacy Shield (if the receiving party is a company established in the United States) or that the receiving party has signed so called standard data protection clauses adopted by the EU Commission. Please contact us at customercare@acnestudios.com if you want further information on what safeguards have been taken and if you want a copy of such safeguards.
Atrophic acne scars have lost collagen from the healing response and are the most common type of acne scar (account for approximately 75% of all acne scars).[32][33] They may be further classified as ice-pick scars, boxcar scars, and rolling scars.[31] Ice-pick scars are narrow (less than 2 mm across), deep scars that extend into the dermis.[32] Boxcar scars are round or ovoid indented scars with sharp borders and vary in size from 1.5–4 mm across.[32] Rolling scars are wider than icepick and boxcar scars (4–5 mm across) and have a wave-like pattern of depth in the skin.[32]
Use oil-free makeup. If you wear makeup, you may be stuck in a vicious cycle of covering up acne while simultaneously causing it with your cover-up usage. Find acne-fighting oil-free mineral makeup to help prevent worsening your acne while simply trying to hide it. Power foundations are also recommended. When possible, avoid wearing make-up at all though as it clogs your pores over the course of the day.

Below is a summary of the categories of data that we process, the purposes of processing the data and on what legal basis we are processing your data. Our processing of your personal data partly depends on whether you have subscribed for membership with us or not. The processing of personal data relating to customers that are not members is described in section 3.2 below. The processing of our members’ personal data is described in section 3.3 below.
Use a toner after cleansing. After you wash your face, exfoliate, or apply a face mask, apply a toner to the entirety of your face. Toners work to tighten pores making it less likely that dirt and oil will become trapped in them. Buy acne toners at a local drugstore, or use witch hazel or apple cider vinegar dabbed on with a cotton ball. Don’t rinse toners after application - allow them to stay on your skin.
Social Security number: If you chose to apply for credit, allowing you to make your payment by invoice, you may be required to provide your social security number on our website. Your social security number will be directly transferred and available only to our payment service provider, which will process your social security number to be able to obtain a credit report and to facilitate your payment. The legal basis is that the processing is necessary for us to ensure accurate identification of our customers for invoice purposes and to fulfill our contractual obligations to you under the purchase agreement. It is our policy to retain your social security number only as long as reasonably necessary for this purpose.
The Swedish company Acne Studios AB, reg. No. 556504-7726 (“Acne Studios”), is the controller of your personal data. Acne Studios’ affiliated companies (including other companies within the Acne Studios group, joint ventures, franchisees and licensees) and selected suppliers may process your personal data on Acne Studios’ behalf and in accordance with Acne Studios’ instructions as stated below and are thereby processors of your personal data. You may contact Acne Studios at any time, please find our contact details below.

Acne appears to be strongly inherited with 81% of the variation in the population explained by genetics.[15] Studies performed in affected twins and first-degree relatives further demonstrate the strongly inherited nature of acne.[2][15] Acne susceptibility is likely due to the influence of multiple genes, as the disease does not follow a classic (Mendelian) inheritance pattern. Several gene candidates have been proposed including certain variations in tumor necrosis factor-alpha (TNF-alpha), IL-1 alpha, and CYP1A1 genes, among others.[19] The 308 G/A single nucleotide polymorphism variation in the gene for TNF is associated with an increased risk for acne.[40] Acne can be a feature of rare genetic disorders such as Apert's syndrome.[15] Severe acne may be associated with XYY syndrome.[41]

Eat healthily. Foods that are highly processed and contain a lot of oils greatly increase the amount of acne on your body. Getting the proper amount of nutrients from whole grains, fruits, vegetables, and protein help your skin to regenerate faster and limit unnecessary oil production. When at all possible, avoid foods that are processed or contain a lot of sugar (think junk foods).[11]
All the dermatologists we talked to agreed that there is no one-size-fits-all solution to acne. Every patient responds to treatments differently, and sometimes it can get worse before it gets better. But with the help of your dermatologist, you can find an acne treatment regimen that works for you. And, yes, we do stress how helpful it is to work with a derm to get it right.
But the side effects of targeted breakout cream treatments aren’t always worth it. “So many products instruct consumers to use benzoyl peroxide spot treat red bumps and pustules. I don’t recommend it,” says Dr. Lawrence Green, board-certified dermatologist and assistant clinical professor of dermatology at George Washington University. Such high concentrations of benzoyl peroxide cause added irritation and inflammation to already sensitive skin, so with this in mind, we cut kits that included spot treatments.

Acne medications work by reducing oil production, speeding up skin cell turnover, fighting bacterial infection or reducing inflammation — which helps prevent scarring. With most prescription acne drugs, you may not see results for four to eight weeks, and your skin may get worse before it gets better. It can take many months or years for your acne to clear up completely.
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