Ingredient

Salicylic Acid

BHA Beta Hydroxy Acid 2-Hydroxybenzoic Acid

What it is

An oil-soluble beta hydroxy acid (BHA) used at low concentrations in toners and treatments to exfoliate and refine the look of pores.

How it works

Loosens the bonds between dead surface skin cells and can penetrate into oil-clogged pores, helping shed built-up debris and smooth texture over time.

What it does

Preservative Exfoliant

Concerns to know

Caution for infants

Better avoided on infant skin, which is thinner and more permeable; prefer fragrance-free, minimal formulas for babies.
Potential irritant

May cause irritation for sensitive skin, particularly at higher concentrations.

Evidence at a glance

Worth knowing

Reflects its most significant known concern.

Why this rating

Potential irritant

As a keratolytic beta-hydroxy acid, salicylic acid is well documented by the CIR and the FDA OTC monograph to cause dose-dependent irritation, dryness, and photosensitivity at exfoliating concentrations; higher drug-level doses commonly carry pregnancy-caution advice, and patch testing plus daily sun protection are recommended with regular use.
Caution for infants

Better avoided on infant skin, which is thinner and more permeable; prefer fragrance-free, minimal formulas for babies.