vitamin A
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Peptides vs. Retinoids: Two Paths to the Same Destination — and Why You Might Want Both
Peptides and retinoids both target collagen and aging, but they work differently. Here’s how each one works, and how to use them together.
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The Vitamin A Ladder: Which Retinoid Is Right for Your Skin?
Which retinoid can your skin actually handle? From gentle retinyl esters to prescription tretinoin, the vitamin A family works on a ladder of potency.