The Biology of Beautiful Lips: How Our Oils Work at a Cellular Level

At YNH Glow, we believe that truly great lip gloss goes beyond aesthetics. As a brand rooted in biomedical science, every ingredient we choose has a biological purpose. Here's a deep dive into the four hero oils in our formula — and exactly what they do for your lips at a cellular level.

Understanding Your Lip Barrier

The lips are covered by a thin, delicate layer of skin with far fewer protective layers than the rest of the face. They lack sebaceous (oil) glands, which means they cannot self-moisturise. This makes them highly susceptible to transepidermal water loss (TEWL) — the process by which water evaporates through the skin barrier. The right oils can dramatically reduce TEWL and restore the lip's natural lipid matrix.

Shea Butter — The Occlusive Protector

Shea butter is extracted from the nut of the African shea tree and is composed of a rich blend of fatty acids — primarily stearic acid and oleic acid — alongside triterpene alcohols such as lupeol and butyrospermol. Biologically, shea butter functions as an occlusive emollient. It forms a semi-permeable film over the lip surface that physically reduces TEWL, allowing the skin to retain its own moisture. The triterpene alcohols have been shown to exhibit anti-inflammatory properties, helping to soothe chapped or irritated lips at a tissue level.

Coconut Oil — The Antimicrobial Penetrator

Coconut oil is uniquely rich in lauric acid, a medium-chain saturated fatty acid that makes up approximately 50% of its composition. Lauric acid is both a potent antimicrobial agent and a deep skin penetrator. At a cellular level, it disrupts the lipid membranes of harmful microorganisms, offering a natural defence against bacteria and fungi on the lip surface. Its relatively small molecular size also allows it to penetrate beyond the stratum corneum into the deeper layers of the epidermis, delivering true intracellular moisturisation rather than simply coating the surface.

Olive Oil — The Antioxidant Shield

Olive oil is rich in squalene, oleic acid, and polyphenols such as oleuropein and hydroxytyrosol. Squalene is a naturally occurring lipid found in human sebum, making olive oil highly biocompatible with skin. It acts as an emollient and antioxidant, neutralising reactive oxygen species (free radicals) generated by UV exposure and environmental pollutants. The polyphenols further amplify this antioxidant effect, protecting the delicate lip tissue from oxidative stress at a molecular level. Oleic acid enhances skin permeability, helping other beneficial compounds absorb more effectively into the lip tissue.

Almond Oil — The Lipid Matrix Restorer

Almond oil is an exceptional source of oleic acid (omega-9) and linoleic acid (omega-6) — two essential fatty acids critical to the structural integrity of the skin barrier. Linoleic acid is a key component of ceramides, the lipid molecules that act as the mortar between skin cells in the stratum corneum. Topical application of almond oil helps replenish this lipid matrix, restoring barrier function and keeping lips soft, supple, and protected.

The Result: Science You Can Feel

Together, these four ingredients work synergistically — each addressing a different biological mechanism. Shea butter seals in moisture, coconut oil penetrates and protects, olive oil defends against oxidative damage, and almond oil restores the structural foundation of the lip barrier.

This is what sets YNH Glow apart. Every swipe of gloss is a delivery system for ingredients that your lips genuinely need — formulated with the precision of science and the luxury of beauty.

Beauty, backed by science. Glow, by design.