Cos De Baha Salicylic Acid BHA 4% Serum

Cos De Baha Salicylic Acid BHA 4% Serum 30ml is a serum with 4% salicylic acid, as the name says. Salicylic acid is a BHA that's oil-soluble, which is why it's popular with people who have oily skin, blackheads or blemish-prone areas.

It's best suited to oily and combination skin.

How to use:

• Apply a thin layer to clean, dry skin in the evening.
• Start two or three times a week.
• Follow with a light moisturiser.

Avoid the eye area and don't combine with retinoids or other strong acids on the same night. Always use sunscreen, as BHA can increase sun sensitivity. Patch test first.