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The ingredient library
Each guide explains what an ingredient does, how to use it, what to pair it with, and how strong the evidence is.
Good evidence
Niacinamide
Vitamin B3 · Nicotinamide
The calm all-rounder for tone, oil and a stronger barrier.
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Good evidence
Hyaluronic Acid
Sodium hyaluronate · HA
A moisture magnet your skin already knows.
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Good evidence
Vitamin C
L-ascorbic acid · Ascorbyl derivatives
The morning antioxidant for glow and collagen support.
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Strong evidence
Retinol
Vitamin A · Retinoids
The most researched family in anti-aging skincare.
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Good evidence
Ceramides
Skin-identical lipids
The 'mortar' that keeps your skin barrier sealed.
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Good evidence
Zinc
Zinc oxide · Zinc PCA
A soothing mineral, from sunscreen to blemish care.
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