Salicylic Acid

Salicylic Acid is a beta hydroxy acid (BHA) derived from willow bark and also produced synthetically for cosmetic use. It is one of the most effective actives for exfoliating the skin, unclogging pores, and reducing acne.

It also has anti-inflammatory and keratolytic properties, making it ideal for treating acne, blackheads, whiteheads, and oily skin conditions.

This makes Salicylic Acid a staple in cleansers, toners, serums, acne treatments, and exfoliating products.

💧 Solubility

Slightly soluble in water (requires heating or pH adjustment)

Freely soluble in alcohol, propylene glycol, and oils with solubilizers

📊 Usage Rate

0.5% – 2% in leave-on skincare (lotions, serums, toners)

Up to 3% in rinse-off products (cleansers, face washes, shampoos)

🔗 Compatibility

Works well with alcohols, glycols, surfactants, and emulsifiers

Incompatible with strong oxidizing agents

Use chelators (like EDTA) to improve stability

⚖️ pH Level

Most effective at pH 3.0 – 4.0

Stability decreases in high pH formulations