Salicylic acid (encapsulated)
INCI Salicylic Acid
The oil-soluble beta hydroxy acid. Works inside the pore lining to keep pores clear-looking; encapsulation slows its release for a gentler feel.
- Typical use range
- 0.5–2% per the literature, not our formula
- Also known as
- Encapsulated salicylic acid, Salicylic acid (encapsulated), BHA, Beta hydroxy acid, 2-Hydroxybenzoic acid
- Identifiers
- PubChem CID 338
Salicylic acid is a beta hydroxy acid (BHA) and the only common exfoliant that is oil-soluble. That property lets it move through sebum into the pore lining, where it loosens the bonds between dead cells that would otherwise build up. The visible outcomes are clearer-looking pores, smoother texture and less surface shine, which is why it is a mainstay for oily and blemish-prone skin.
In cosmetic products it is used at 0.5–2%. In the EU it is restricted to 2% in leave-on products and is not used in products for children under three. Free salicylic acid can sting or dry at the surface, especially when combined with other actives.
Encapsulation addresses that. The acid is held in a carrier that releases it gradually after application, so the same dose reaches the pore over time rather than all at once. The aim is the same exfoliation with a calmer feel, which matters in a multi-active serum used every day. Sunscreen in the morning remains non-negotiable.
Where you will find it.
Percentages are read from each product's stated active complex. Where none is stated the ingredient appears in the full INCI only.
What does "encapsulated" change?
The release rate, not the ingredient. The salicylic acid is held in a carrier and let out gradually, so the surface sees less of it at any one moment. That usually means less sting and dryness at the same strength.
Can I use it with lactic acid?
In one balanced formula, yes, because the percentages are set together. Layering two separate acid products in the same routine is where irritation usually starts.
Is salicylic acid suitable if I am sensitive to aspirin?
Aspirin is acetylsalicylic acid, a related molecule. If you have a known salicylate sensitivity, speak to your doctor before using any salicylic acid product.
- CosIng, Salicylic Acid (EU cosmetic ingredient database) ec.europa.eu/growth/tools-databases/cosing/
- PubChem, Salicylic acid (CID 338) pubchem.ncbi.nlm.nih.gov/compound/338
- Arif T. Salicylic acid as a peeling agent: a comprehensive review. Clin Cosmet Investig Dermatol. 2015;8:455–461.
- Regulation (EC) No 1223/2009 on cosmetic products, Annex III (restricted substances), salicylic acid entry.