Retinol
Vitamin A derivative
A widely studied vitamin A derivative commonly used in night-time skincare for texture, tone and the appearance of fine lines.
- Uneven texture
- Fine lines
- Blemish-prone skin
Skincare Ingredients, Explained
Plain-language explainers for the ingredients you see most often on a label — what they do and who they suit.
4 guides in this section.
Topics we cover
- Retinol
- Vitamin C
- Niacinamide
- Hyaluronic Acid
- Salicylic Acid
- Glycolic Acid
- Ceramides
- Peptides
- Azelaic Acid
- Squalane
Ingredient glossary
Vitamin C
Ascorbic acid and derivatives
An antioxidant ingredient used in daytime routines, most often to support a brighter-looking, more even-looking complexion.
- Dullness
- Uneven tone
- Antioxidant support
Niacinamide
Vitamin B3
A multi-tasking, generally well-tolerated ingredient used for visible pores, oil balance and skin-barrier support.
- Visible pores
- Oil balance
- Barrier support
Hyaluronic Acid
Sodium hyaluronate
A humectant that draws water into the upper layers of skin, which is why it appears in so many hydrating formulas.
- Dehydration
- Plump-looking skin
- Lightweight hydration
Salicylic Acid
BHA
An oil-soluble beta hydroxy acid used in cleansers and treatments for congested, blemish-prone skin.
- Congestion
- Blackheads
- Blemish-prone skin
Glycolic Acid
AHA
A small-molecule alpha hydroxy acid used in exfoliating toners and serums for texture and radiance.
- Rough texture
- Dullness
- Uneven tone
Ceramides
Skin-identical lipids
Lipids that occur naturally in the skin barrier and are added to moisturizers to help reduce moisture loss.
- Dry skin
- Barrier support
- Sensitivity
Peptides
Amino acid chains
Short chains of amino acids included in many modern formulas marketed for firmness and skin resilience.
- Firmness
- Skin resilience
- Gentle routines
Azelaic Acid
Dicarboxylic acid
A gentle multi-tasking acid often used for redness-prone or blemish-prone skin and uneven tone.
- Redness-prone skin
- Uneven tone
- Blemishes
Squalane
Hydrogenated squalene
A lightweight, stable emollient that mimics components of the skin's own oils without a heavy finish.
- Lightweight moisture
- Dry patches
- Layering
Featured guides
CeramidesIngredients
Ceramides Explained: The Barrier Ingredient Worth Knowing
Ceramides are lipids your skin already makes. Here is why they appear in so many moisturizers, how to tell whether a formula uses them meaningfully, and how to build a barrier-friendly routine.
5 minRead →
RetinolIngredients
Retinol vs Bakuchiol: Understanding the Difference
A comparison of the most studied topical anti-ageing ingredient and its plant-derived alternative — evidence, tolerance, how to introduce either one and who each suits.
4 minRead →
Vitamin CIngredients
Vitamin C in Skincare: What Does It Actually Do?
Vitamin C is best understood as an antioxidant with supporting evidence for tone and texture — not a miracle ingredient. Here is what to expect, how to choose a stable formula and how to use it.
4 minRead →
NiacinamideIngredients
Niacinamide Explained: Benefits and How to Use It
One of the most widely used and generally well-tolerated skincare ingredients — what it does, what it does not do, how to choose a strength, and how to fit it into a routine.
5 minRead →
Products referenced in this section
Editorial profiles describing what to look for in each category. We do not publish invented prices or ratings — use the retailer link to see current details.
Editor's Shortlist
Gentle Hydrating Cream Cleanser
A low-foaming cream cleanser with glycerin and mild surfactants — the type of formula that suits skin that feels tight after washing.
- Texture
- Low-foaming cream / milk
- Band
- Budget
- Dry skin
- Sensitive skin
- Tightness after cleansing
Check Price ↗Opens retailer search
Editor's Shortlist
Ceramide Barrier Cream
A mid-weight moisturizer built around ceramides, cholesterol and fatty acids — a combination often used to support the skin barrier.
- Texture
- Mid-weight cream
- Band
- Mid-range
- Dry skin
- Compromised barrier
- Flaking
Check Price ↗Opens retailer search
Our Approach
Information before recommendation
We focus on useful product information, ingredients, features, potential benefits, drawbacks and suitability so readers can make more informed decisions.
Some articles contain affiliate links. If you purchase through one, we may earn a commission at no extra cost to you. This does not determine our recommendations. Read the disclosure.
- Careful language
- “May help”, not “guaranteed results”.
- Clear disclosure
- Affiliate links are always labelled.
- Honest drawbacks
- Every profile lists who should skip it.
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