Get a free visit for ED treatment. Start now

Last updated: Jun 21, 2022
3 min read

Salicylic acid for skin: how does it work?

chimene richaPatricia Weiser PharmD

Medically Reviewed by Chimene Richa, MD

Written by Patricia Weiser, PharmD

Disclaimer

If you have any medical questions or concerns, please talk to your healthcare provider. The articles on Health Guide are underpinned by peer-reviewed research and information drawn from medical societies and governmental agencies. However, they are not a substitute for professional medical advice, diagnosis, or treatment.

Acne is a common skin problem that can (literally) break out at any time. It can be frustrating, but know you’re not alone––acne affects 40–50 million people in the United States (AAD, n.d.). 

If you’re looking for a remedy for whiteheads, blackheads, or other acne blemishes, salicylic acid is one of the most widely used topical medications. It’s also a common ingredient used in chemical peels and wart remover. Read on to learn more about what salicylic acid does and how to use it.

Start with 25% off your first month of
custom skincare

Try our personalized prescription skincare from the comfort of your home.

Offer details

What is salicylic acid?

If you’re not familiar with salicylic acid, is an active ingredient in many topical (applied to the skin) medications for skin and foot care products like pimple-fighting face wash and wart remover.

Despite limited clinical evidence of its effectiveness, salicylic acid is a popular over-the-counter acne treatment (Tan, 2018).

What does salicylic acid do?

Salicylic acid works by unclogging pores, promoting exfoliation of dead skin cells, and decreasing skin oil (sebum) production. 

It’s classified as a beta-hydroxy acid (BHA), which is oil-soluble––meaning it dissolves in oil as opposed to water. This characteristic allows BHAs to penetrate deep into oil-clogged skin pores, making salicylic acid a potentially powerful ingredient for fighting acne (Arif, 2015). 

Additionally, salicylic acid is very similar to aspirin, an anti-inflammatory medicine used to treat pain and fever. Like aspirin, salicylic acid helps reduce inflammation (Tan, 2018; Arif, 2015).

What does salicylic acid treat?

Lower strengths of salicylic acid are mainly used to treat acne. Higher strengths are used to remove or loosen thick areas of skin. Here are the most common salicylic acid uses and strengths (Arif, 2015).

Does salicylic acid clear up acne breakouts?

Because of the limited evidence of this ingredient’s effectiveness, experts typically recommend other topical acne medications. Top choices for treating acne include (Tan, 2018): 

But salicylic acid is a good choice for treating mild acne, especially for those who can’t tolerate retinoids like tretinoin (brand name Retin-A; see Important Safety Information). If you don’t see clearer skin within a few months of use or if your acne becomes more severe, see a healthcare provider or dermatologist for medical advice (Graber, 2022).

Side effects and safety

Common side effects of salicylic acid include skin irritation and stinging at application areas. It’s recommended to start out with a low concentration and only apply it every other day (MedlinePlus, 2016).

To prevent an allergic reaction, test new skincare products on a small area for the first few days. If you develop a rash, swelling, itching, or other signs of an allergic reaction, wash it off and seek medical attention right away. 

While rare, salicylic acid toxicity (salicylism) can occur from swallowing or applying too much topical product containing the ingredient. Rare side effects include (Arif; 2015; MedlinePlus, 2016): 

  • Confusion 
  • Dizziness 
  • Fatigue 
  • Headache
  • Rapid breathing
  • Ringing in the ears or trouble hearing 
  • Nausea, vomiting, or diarrhea 

As always, consult a healthcare professional before using any new medications or supplements. This is especially important if you’re pregnant, breastfeeding, have very sensitive skin, or have any underlying medical conditions (MedlinePlus, 2016).

How to use salicylic acid

There are different ways to use salicylic acid depending on the product. Some are available as a lotion or daily wash, while others are meant to be used on the skin for only a short time. 

Be sure to read the instructions that come with the product. The label will give you step-by-step instructions on how to prepare your skin and apply it. If you have questions, consult a healthcare or dermatology professional. They can also recommend a skincare routine that’s best for your skin condition and skin type.

References

  1. American Academy of Dermatology (AAD). (n.d.). Skin conditions by the numbers. Retrieved from https://www.aad.org/media/stats-numbers
  2. Arif, T. (2015). Salicylic acid as a peeling agent: a comprehensive review. Clinical, Cosmetic and Investigational Dermatology, 8, 455–461. doi:10.2147/CCID.S84765. Retrieved from https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4554394/ 
  3. Graber, E. (2022). Patient education: acne (beyond the basics). UpToDate. Retrieved from https://www.uptodate.com/contents/acne-beyond-the-basics 
  4. MedlinePlus. (2016). Salicylic acid topical. Retrieved from https://medlineplus.gov/druginfo/meds/a607072.html 
  5. Tan, ​​A. (2018). Review of diagnosis and treatment of acne in adult female patients. International Journal of Women’s Dermatology, 4(2), 56–71. doi:10.1016/j.ijwd.2017.10.006. Retrieved from https://www.sciencedirect.com/science/article/pii/S2352647517300862?via%3Dihub