Hyper Vitamin C 23 Serum

The base most products are built on. It carries the other ingredients and has no safety concern.

The most well-studied form of topical vitamin C, used as an antioxidant and to support collagen signaling and brighten uneven tone. It is acidic and can sting or irritate sensitive skin, and it oxidizes readily once a bottle is opened, which can reduce its effectiveness rather than create a safety issue.

A corn-derived solvent and humectant that has largely replaced propylene glycol in "clean" formulas; CIR reviewed the alkane diol group and found use concentrations up to about 40 percent in leave-on products like deodorant sticks with no meaningful irritation signal.

A humectant naturally derived from sugar beets that helps skin draw in and hold water; it has a long history of safe use with no meaningful irritation or sensitization concerns.

A humectant derived from glycerin, used to attract and retain moisture in cosmetic formulas. Evidence from cosmetic use indicates it is well-tolerated and produces minimal sensitization even on sensitive skin.

A buffering agent used in tiny amounts to set a product's pH, most often alongside gel-forming polymers. It is graded low concern in published assessments at the levels used.

A urea derivative used as a humectant to help skin retain moisture and improve hydration. Published safety assessments find it well tolerated at the use levels in cosmetics.

A glycerin derivative used as a skin conditioner and preservative booster, often paired with phenoxyethanol to allow lower total preservative levels. It has a low irritation and sensitization profile in safety reviews.

A naturally occurring nucleoside used in anti-aging formulas, often marketed for smoothing the look of fine lines. It has a low irritation profile and no established hazard at cosmetic use levels.

A chelating agent that binds trace metal ions to keep formulas stable and preservatives working properly. It is not a functional skincare "active" and only a very small amount is used, with minimal skin penetration expected.

A soothing humectant that helps skin and hair look conditioned. Very well tolerated.

A starch breakdown product used as a thickener and texture modifier in cosmetic formulations. It is well established in cosmetics and food applications with documented low irritation and contact sensitization risk across diverse skin types.

An antioxidant that helps protect a formula and condition skin. Well tolerated.