The right amount of SPF typically equals the length of your index and middle fingers combined. This visual works well for lightweight formulas, though you might need a bit less for richer textures. Be sure to cover your entire face – including your eyelids, lips, the tops of your ears, and neck – for full protection. - Dr. Kelly Saynor Exfoliants: Gentle exfoliation once or twice a week (preferably with a PHA or mild BHA) helps prevent clogged pores, refine skin texture, and improve tone. Avoid harsh physical scrubs, as they can tear your skin and increase sensitivity. “You should generally think of a dessert spoon amount when applying SPF to your face. But if you need more, go for it!” How much SPF should I apply? COSRX BHA Blackhead Power Liquid £26.00 THE INKEY LIST PHA Toner £13.00 PHA = POLYHYDROXY ACID WHO SHOULD USE IT: PHAs work their powers on the skin’s surface to not disturb the delicate layers that lie beneath. However, they are still a chemical exfoliant, so always start with a low concentration and monitor skin for any adverse reactions. HOW OFTEN CAN YOU USE IT: To start, try using PHAs three times a week. You can use it in the form of a toner, a face wash, or even a serum. WORKS WELL WITH: Other acids in low concentrations.
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