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The complete A-to-Z guide to skin care

Learn the definition of skin care terms from A to Z.Looking to find the best skin care routine? Learn the definitions of popular terms in this glossary.

Acids & Actives
Are 'actives' the key to improving your skin?
Blackheads
Dr. Pimple Popper shares her best advice for getting rid of blackheads
CBD oil
Are CBD skin care products worth the hype? Dermatologists weigh in
Dermaplaning
Should women shave their faces? Everything you need to know about dermaplaning
Expiration dates
Do skin care products expire? How to know when it's time to toss
Free radicals
Why you (and your skin) should be concerned about free radicals
Gluten-free
Gluten-free skin care: What it means and who should use it
Hyaluronic acid
What is hyaluronic acid, and should you add it to your skin care routine?
Ingestibles
Fact or fiction? Beauty vitamins aren't as magical as they claim
Japanese skin care
A definitive guide to Japanese beauty products
Korean skin care
The Korean skin care routine beauty experts love — and how to try it
Laser & LED
Are laser and LED light therapy treatments good for your skin?
Microneedling
Does skin needling really work? What to know about the growing beauty trend
Natural, Organic & Clean
What is 'clean beauty'? Here's what you need to know
Oils
Are face oils right for you? Dermatologists share all
Probiotic & Prebiotic
What is probiotic and prebiotic skin care — and should you try it?
Quit Overdoing It
Are you using too many skin care products? Here's what dermatologists say
Retinol
Is it time to use retinol? How to know if it's right for your skin care routine
Serum
What is face serum, and should you use it? Here's what you need to know
Toner
Dealing with dull skin? A derm suggests incorporating this product into your routine
UVA & UVB
Are you protected against UVA and UVB rays? Here are the best ways to defend skin
Vegan
What is vegan skin care — and is it better for you?
Diet & Fitness
These are the best foods to eat for healthy, beautiful skin
eXfoliation
How to exfoliate every part of your body, according to dermatologists
Your skin type
There are 5 different skin types: Which do you have?
Zero waste
Is your beauty routine killing the planet? 3 things to know before you shop
A to Z
See all of our skin care coverage

The complete A-to-Z guide to skin care

Are 'actives' the key to improving your skin?

Dr. Pimple Popper shares her best advice for getting rid of blackheads

Are CBD skin care products worth the hype? Dermatologists weigh in

Should women shave their faces? Everything you need to know about dermaplaning

Do skin care products expire? How to know when it's time to toss

Why you (and your skin) should be concerned about free radicals

Gluten-free skin care: What it means and who should use it

What is hyaluronic acid, and should you add it to your skin care routine?

Fact or fiction? Beauty vitamins aren't as magical as they claim

A definitive guide to Japanese beauty products

The Korean skin care routine beauty experts love — and how to try it

Are laser and LED light therapy treatments good for your skin?

Does skin needling really work? What to know about the growing beauty trend

What is 'clean beauty'? Here's what you need to know

Are face oils right for you? Dermatologists share all

What is probiotic and prebiotic skin care — and should you try it?

Are you using too many skin care products? Here's what dermatologists say

Is it time to use retinol? How to know if it's right for your skin care routine

What is face serum, and should you use it? Here's what you need to know

Dealing with dull skin? A derm suggests incorporating this product into your routine

Are you protected against UVA and UVB rays? Here are the best ways to defend skin

What is vegan skin care — and is it better for you?

These are the best foods to eat for healthy, beautiful skin

How to exfoliate every part of your body, according to dermatologists

There are 5 different skin types: Which do you have?

Is your beauty routine killing the planet? 3 things to know before you shop

See all of our skin care coverage