This ingredient comes from a rare Swiss apple known as Uttwiler Spätlauber. It is produced from the cell cultures of the apple and not the fruit itself.

According to manufacturer studies, this ingredient has demonstrated the following benefits:

• Visible anti-wrinkle effect around the eye area (in vivo)
• Enhanced colony-forming efficiency of epidermal stem cells (in vitro)
• Improved ability of skin cells to regenerate and build new tissues in a 3D epidermis model (in vitro)
• Increased skin density (in vitro)
• Boosted vitality of epidermal stem cells (in vitro)
• Reversal of cellular aging signs in fibroblasts (in vitro)

Pentylene glycol is typically used within a product to thicken it. It also adds a smooth, soft, and moisturizing feel to the product. It is naturally found in plants such as sugar beets.

The hydrophilic trait of Pentylene Glycol makes it a humectant. As a humectant, Pentylene Glycol helps draw moisture from the air to your skin. This can help keep your skin hydrated.

Water. It's the most common cosmetic ingredient of all. You'll usually see it at the top of ingredient lists, meaning that it makes up the largest part of the product.

So why is it so popular? Water most often acts as a solvent - this means that it helps dissolve other ingredients into the formulation.