What are peptides?

If you're in well-aging mode or simply want to keep your skin firm for longer, you're probably wondering what peptides are and why they're appearing in more and more products. Peptides are short chains of amino acids, i.e. protein fragments, that act as messengers between cells.

They are naturally recognised by the skin because they are part of its biological structure, so they are well tolerated. They are ideal active ingredients to prevent and treat the signs of aging without irritation, which is why they are present in so many Korean skincare products: from serums and creams to masks and eye contours.

What are they used for?

Peptides have a clear function: to activate regeneration and firming processes from within. They do not exfoliate, do not dry out, do not sensitise. They simply help the skin to function better. They stimulate the production of collagen and elastin, two key proteins that decrease over time and, when in short supply, make the skin look saggy, dull and wrinkled.

They also help to reinforce the skin barrier, resulting in more resilient, hydrated and balanced skin. They are very versatile actives and can be used in both preventative routines and more targeted treatments.

Benefits of peptides for the skin

Firm and tone the face from within.
Smooth wrinkles and expression lines without irritating.
Improve skin elasticity and density.
Reinforce the skin barrier, which improves tolerance to other actives.
Compatible with other ingredients: peptides can be combined with vitamin C, niacinamide, retinol or acids.

This balance between efficacy and gentleness is exactly what makes peptides so special. They work well at any age, but especially when you start to notice changes in skin firmness or definition of facial contours.

What types of peptides are there?

Yes, there are various types, and each has a specific function within the skin. The interesting thing is that many formulas combine several for a more complete effect.

Signal peptides: the most common. They stimulate the production of collagen and elastin.
Neurotransmitter peptides: act by relaxing muscle contraction, which helps to smooth expression lines (botox-like effect).
Carrier peptides: carry essential minerals to the cells to facilitate their repair.
Enzyme inhibitor peptides: prevent the degradation of existing collagen, prolonging its effect on the skin.

Each acts at a different level, and when combined, they can address multiple fronts at once: prevention, repair and protection.

How to incorporate peptides in your routine?

Easy, because you'll find them in all kinds of formats: serums, creams, ampoules, contours... The key is consistency, not complication.

Recommended step: after toner or essence and before moisturiser.
Frequency: you can use them daily, in the morning and/or at night.
Compatibility: they have no known side effects and combine well with other actives, so you can include them in more complete routines.
Top format: serums, because their texture allows them to penetrate well and act where they are most needed. But they are also great for eye contours.

And the best part: you can use peptides even if you are using acids or retinol. In fact, they help these actives to be better tolerated because they strengthen the skin from within.

From what age is it recommended to use them?

Peptides can be introduced from the age of 25-30, when natural collagen production begins to decline. At this stage they have a very effective preventive function. They help to maintain firmness, delay the appearance of fine lines and strengthen the skin structure.

But they are also ideal for mature skin that already shows visible signs of aging. In this case, peptides become a firming treatment that works progressively, without irritation or sensitisation.

If you are looking for a treatment that improves the firmness and elasticity of your skin without side effects, peptides are your best ally. They are compatible with any type of routine, do not require adaptation and can be used long-term. All advantages.