Ingredients
4 min read
Vitamin C, without the guesswork
What the percentage means, and when to use it.
Why 15%
Below 10% the brightening effect is mild; above 20% irritation rises without much extra benefit. Fifteen percent is the sweet spot for daily use.
Morning, under sunscreen
Vitamin C helps defend skin against daylight stress, so it works best in the morning, layered under SPF.
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Ingredients
5 min read
A four-week plan for smoother skin without the sting.
Notes
3 min read
Texture first, then protection. Here is how to choose.