If you're a fan of K-Beauty, or skincare in general, you've probably already heard of peptides. But what are they? What are they used for?

Peptides have become a popular ingredient due to their many beneficial effects on the skin. They are composed of small chains of amino acids and act as messengers for our skin, telling it how to behave. We can find them in a huge number of cosmetic products. Here are some of their roles:

1. Anti-aging effect :

Certain peptides encourage skin cells to produce more collagen, making our skin firmer and reducing the appearance of fine lines and wrinkles. They also stimulate cell regeneration, improve skin elasticity, and aid in the repair of skin tissue, resulting in younger-looking skin.

2. Protection of the skin barrier :

Repairing peptides help strengthen the skin barrier and better protect the skin from external aggressions (such as pollution, UV rays, etc.). They help keep skin hydrated and reduce the signs of skin aging.

3. Anti-inflammatory action :

Some peptides have anti-inflammatory properties and soothe redness and irritation, making them very suitable for sensitive skin.

4. Muscle relaxation and hydration ("Botox-like" effect):

Certain peptides help attract and retain water in our skin, making it smoother and plumper-looking.

Here's a look at some of the best peptide products sold on Keeomi:

• The light and soothing moisturizer: 345 Relief Cream by Dr. Althea
• Anti-aging moisturizer: Dynasty Cream by Beauty of Joseon
• The all-in-one serum: Reedle Shot 100 by VT Cosmetics