

When skin looks dull, the first instinct is often to add another serum, while the cause is usually a layer of dead cells, dehydration or a run of short nights. Once you know which one is behind it, a few small, steady changes bring the glow back.
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What each one does, how it works and how to use it.

Enzymes dissolve the bonds holding dead cells to your skin and then stop, which makes them the gentlest exfoliant there is. Here is how they work and who they suit.
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Lactic acid exfoliates and hydrates at the same time, which makes it the AHA for dry and easily irritated skin. Here is how it compares to glycolic and how to use it.
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Glycolic acid is the smallest exfoliating acid, so it reaches deepest and does the most for texture, tone and fine lines. Here is how to use it without overdoing it.
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Mandelic acid exfoliates, slows pigment production and reduces acne bacteria all at once, which makes it the acid for post-breakout marks and deeper skin tones.
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Vitamin C intercepts the daily damage from sun and pollution, fades dark patches and is required for your skin to build collagen. Here is how it works and which form suits your skin.
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Niacinamide calms redness, strengthens the barrier, evens pigment and regulates oil, all without irritation. Here is why four to five percent is the number and how it fits with everything else.
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Glutathione is the antioxidant your own cells make. What it does about everyday damage and uneven tone, and how to choose a product that still works when you open it.
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Hyaluronic acid holds a thousand times its weight in water and plumps skin the same day. Here is how to apply it so it works, and why it sometimes backfires.
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A carboxy gel mask uses carbon dioxide to make your own blood deliver oxygen to the skin, so you get visible plumpness and glow within the hour. Here is how it works and when to use it.
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Exfoliating cleanser with AHAs and salicylic acid that clears pores and refines skin texture.

Growth factor and peptide serum that firms, smooths, and regenerates.

A revitalizing peptide serum that firms skin and calms redness.

Potent hyaluronic acid serum that deeply hydrates, smooths texture, and revives tired or stressed skin.

Smooths, hydrates, and restores the skinβs protective barrier with a lightweight, breathable finish.

Rich hydrating serum that plumps, calms irritation, and helps restore compromised or sensitive skin.

Strengthens elasticity, smooths wrinkles, and improves dull, thinning skin.

Novel retinal + HA hydrator that firms, smooths, and suits even reactive skin.

Retinal plus a 5-acid blend in leave-on pads that resurface, brighten, and clear congestion.

Improves texture, fine lines, tone and skin clarity.

A hydrating essence with NAD+ that restores balance, vitality, and moisture for a refreshed look.

For dry, sensitive, and mature skin that needs deep nourishment, barrier repair, and anti-aging.

Acne mask for oily, congested, and blemish-prone skin.

Clarifying gel cleanser for excess oil, clogged pores, and acne-prone skin.

A lightweight mist that hydrates, heals stressed skin, and refreshes irritated or post-procedure skin.

Once-daily moisturizer with antioxidants designed to reduce oil and protect menβs skin.

Strengthens weak, inflammation-driven skin laxity and the appearance of cellulite.

Weekly mask that helps improve texture, discoloration, congestion, and skin radiance.

Rich, barrier-supportive cream for severely dry or dehydrated skin.

Lightweight hydrator that restores balance and radiance to dry, aging skin.

Oil-free serum for oily, dry, dehydrated, acne-prone, reactive, and post-procedure skin.

Supports repair, improves elasticity, strengthens skin resilience.

Vitamin A eye gel for dryness, puffiness, dark circles and fine lines.

Vitamin-rich body oil that improves dryness, rough texture, and skin softness.
Blackheads and Whiteheads: What Clogs a Pore and How to Clear It
Blackheads and whiteheads are clogged pores that have not turned red or sore. Here is what forms the plug, why many nose blackheads are something else, and how to clear them.
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Dark Circles: What Causes Them and What Skincare Can Change
Dark circles come from extra pigment, blood vessels showing through thin skin, or shadow from a hollow under the eye. Here is how to tell which you have and what skincare can change.
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Glycation: How Sugar Stiffens Skin and What Can Slow It
Glycation is sugar bonding to the collagen in your skin, leaving it stiffer and more yellow over the years. Here is how it happens, what speeds it up and what can slow it down.
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