Peptides are small chains of amino acids and are the building blocks of large proteins like collagen and elastin.

Peptides occur naturally in the body and in nature, however, most peptides found in skincare preparations are synthetic (lab created) as they give scientists a greater degree of control in their function once absorbed.

A good analogy to grasp how peptides work is to liken them to a lock and key. In order to unlock certain functions within the skin, to stimulate collagen growth for example, one needs the correct key or correct chain of amino acids for the job. When the correct chain, or protein fragment, is detected by the body, the body recognizes this fragmented piece as a damaged protein. The response is to repair and replenish the perceived collagen loss. This results in increased collagen synthesis. In other words, the skin is plumped and the appearance of wrinkles is diminished.

It’s important to note that not all peptides stimulate collagen. Just as there are different keys for different doors, so too are there different peptides that elicit their own unique response within the skin.

Sounds like we’ve found the fountain of youth, right? Not so fast. The effectiveness of a peptide treatment depends on a number of factors. This can include (but is not limited to) absorption, variety of peptides used, method of delivery (how they penetrate the skin, if at all), as well as the body’s current ability to repair lost collagen – this ability diminishes with age.

We believe any good skincare regimen should include peptides. That’s why all ExPürtise products contain peptides, typically a variety of them to increase efficacy. We also, include additional active ingredients like antioxidants, hyaluronic acid and vitamins such as retinol (a form of vitamin A) to address aging skin from multiple angles.


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