Researched by Helena DeMaria-Williams
Active IngredientBeta Hydroxy AcidSalicylic Acid
INCI: Salicylic Acid
Salicylic acid is a beta hydroxy acid (BHA) derived from willow bark, with a chemical structure related to aspirin. Unlike water-soluble AHAs, it is lipid-soluble, allowing it to penetrate into pores and dissolve the oil and debris that cause blackheads and breakouts. It also has anti-inflammatory properties that help calm redness associated with acne.
Typical Concentration
Best For Skin Types
CAS Number
69-72-7
What are the benefits of Salicylic Acid?
Is Salicylic Acid safe? Key considerations
Can Salicylic Acid cause irritation?
Medium RiskCan cause dryness, peeling, and irritation, particularly at concentrations above 2%. Sensitive skin types should patch test. EU Annex III restricts to 2% in leave-on products and 3% in rinse-off products. Not recommended for people with aspirin sensitivity.
Does Salicylic Acid increase sun sensitivity?
No RiskUnlike AHAs, salicylic acid does not increase photosensitivity at standard OTC concentrations (0.5–2%). Some research suggests it may have mild photoprotective properties. However, using SPF daily is still recommended as a general skincare best practice.
Is Salicylic Acid safe during pregnancy?
CautionLow-concentration OTC leave-on products (up to 2%) are generally considered low risk for topical use. High-concentration professional peels and oral salicylates should be avoided during pregnancy. Consult a healthcare provider before use.
How does Salicylic Acid work?
Salicylic Acid is a beta hydroxy acid active used across a range of concentrations depending on the application and product format.
Particularly beneficial for oily and acne-prone and congested pores and blackheads and whiteheads and large pores skin.
Individuals with aspirin sensitivity, sensitive skin, dry skin (use with caution), rosacea (use with caution), open wounds, active irritation should review the considerations above before use.
How do you use Salicylic Acid in your routine?
A step-by-step guide to introducing Salicylic Acid into your skincare routine safely and effectively.
Choose the right concentration
Start with a product containing 0.5–2% in OTC leave-on products (EU max 2%). Lower concentrations are better for beginners or sensitive skin.
Patch test first
Salicylic Acid has a medium irritation risk. Apply a small amount to your inner forearm and wait 24 hours before using it on your face.
Introduce gradually
Start by using Salicylic Acid 2–3 times per week in the evening. If your skin tolerates it well after 2 weeks, you can increase frequency.
Apply morning or evening
Salicylic Acid does not increase sun sensitivity, so it can be used in either your morning or evening routine.
Follow with moisturiser
After Salicylic Acid has absorbed, apply a moisturiser to support your skin barrier. This is especially important when using active ingredients.
Science & Research
Research references for this ingredient are coming soon.
Which products contain Salicylic Acid?
Shop products that contain Salicylic Acid
Glycolic Acid Exfoliating Body Stick
Supersize Salicylic Acid Cleanser
360° Skin Clearing Serum
Salicylic Acid Cleanser
Hydrocolloid Invisible Pimple Patches
Hydrocolloid Invisible Pimple Patches
Succinic Acid Treatment
Beta Hydroxy Acid (BHA) Serum
C-50 Blemish Night Treatment
Cetaphil Gentle Clear Pimple Patches
Gentle Clear Triple Action Blemish Serum
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Gentle Exfoliating Salicylic Acid Cleanser, For Face & Body
Gentle Clear Clarifying Cream Cleanser
AHA 30% + BHA 2% Peeling Solution
Salicylic Acid 2% Solution
Salicylic Acid 2% Anhydrous Solution
Marine Hyaluronics
Salicylic Acid 2% Masque
