Exfoliating acids gently loosen dull surface cells so skin looks smoother and more radiant. Used too often they can leave skin feeling sensitive, so the key is to start slowly.
Know your acids
- AHAs, such as lactic acid, work on the skin's surface and suit normal to dry skin looking for a brighter, smoother look.
- BHA (salicylic acid) is oil-soluble, so it's popular with oily and blemish-prone skin.
How to start
Step 1: Patch test
Apply a little AHA Exfoliating Concentrate behind your ear or on your jaw for two evenings. If there is no irritation, you're ready to begin.
Step 2: Start twice a week, at night
Apply after cleansing on dry skin, in the evening. Mild tingling can be normal; burning is not, so rinse it off if it stings.
Step 3: Follow with hydration
Layer Hydrating Serum and a comforting moisturizer such as Sensitive Skin Overnight Cream on exfoliation nights.
Step 4: Don't double up
On exfoliation nights, skip retinol alternatives, scrubs and other exfoliants. One active at a time is enough.
Step 5: Wear sunscreen every day
Exfoliated skin is more sensitive to the sun, so a broad-spectrum sunscreen each morning is essential.
Step 6: Build up slowly
After a few weeks, if skin is happy, you can increase to three times a week. For a brighter-looking complexion, you can also alternate with Kojic Acid Brightening Exfoliator.
Signs to slow down
Tightness, stinging, redness or flaking mean your skin needs a break. Pause exfoliating for a week and focus on hydration and barrier support.
Quick questions
Can sensitive skin use acids?
Often yes, starting with a gentle AHA like lactic acid, once a week, after a patch test. If unsure, ask a dermatologist.
Should I exfoliate in the morning or at night?
At night, followed by sunscreen the next morning.
