What are peptides and why do you need them for your skin and hair?

💧Peptides: what is this beast and why do you need them in your make-up bag?

If you have even the slightest interest in skincare, the word "peptides" has definitely caught your eye. These tiny chains of amino acids have taken over everything from creams to shampoos and even eyelash serums. Google queries for them have gone up 5000%. But do they really work? And is it worth adding yet another trendy ingredient to an already crowded beauty ritual?

Elle edition parsed with dermatologists and experts.

🧬 What are peptides?

Peptides are short chains of amino acids that help our skin stay firm, smooth and healthy. They are involved in the formation of collagen, elastin and keratin - the proteins that literally keep our appearance 'in shape'. As we age, peptide levels drop, and that's where cosmetics come in.

✨ What can they do?

When peptides are applied to the skin, they "talk" to the cells and give them a command: to produce collagen, strengthen the barrier, reduce inflammation. Also, to improve hair growth and even scalp health.

Plus, they're small in size, which means they penetrate deeply and effectively. And, unlike retinol or acids, they don't irritate the skin. Even during pregnancy and breastfeeding they can be used!

🧴 How do you incorporate peptides into your skincare routine?

Peptides are found in creams, serums, masks, and even lip balms (thanks, Hailey Bieber!). Start with a light serum or moisturiser - it's safe and pleasant. They're suitable for almost all skin types, even sensitive skin.

For hair, peptides are also a real discovery. They strengthen strands, prevent hair loss and improve scalp health. And yes, they are even in serums for eyelash growth: they lengthen, strengthen and make them thicker.

⚠️ It's important to remember

Peptides are cool, but they're not magicians. And not all formulas are equally effective. It all depends on the quality, concentration and type of peptide. Also - don't mix them with acids (like AHA and BHA), they can break the peptide bonds.

But with vitamin C, hyaluronic acid, niacinamide and retinol (if used at different times of the day) - please.