Molvany Glossy Plumping Lip Balm Versus COSRX Refresh AHA BHA Vitamin C Lip Plumper

This is a synthetic polymer used to thicken formulas, improve texture, and enhance spreadability.

Due to its large molecule size, this ingredient does not penetrate the skin and is considered well-tolerated.

Hydrogenated Polyisobutene is a synthetic polymer. Polymers are compounds with high molecular weight. Hydrogenated Polyisobutene is an emollient and texture enhancer.

In one study, Hydrogenated Polyisobutene showed better skin hydration levels than Caprylic/Capric Triglyceride. As an emollient, it helps keep your skin soft and hydrated by trapping moisture in.

Microcrystalline Wax is derived from petroleum through a de-oiling process, then highly refined and purified before use in cosmetics.

In skincare formulations, it is used to improve texture and create a smooth, even consistency. It also helps stabilize products by preventing ingredients from separating.

Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate (long name, huh?) is a synthetic antioxidant.

It is used to help stabilize other antioxidants or prevent the color from changing in a product.

Phytosteryl/Isostearyl/Cetyl/Stearyl/Behenyl Dimer Dilinoleate is an emollient ester.

As an emollient, it softens and hydrates your skin by locking moisture in. Its large, branched structure gives it a thick, cushiony feel without being greasy. This is why it shows up most often in lip balms, lipsticks, and other stick or balm formulas, where it adds gloss and helps hold waxes and pigments together.

Polyisobutene is a synthetic polymer made from isobutene.

It is a film-forming agent and helps bind ingredients together.

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.