Moisturizer

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

A humectant that draws water into the skin. One of the best-studied, best-tolerated ingredients in personal care.

A plant-derived water or extract used mainly as a soothing humectant filler. Evidence for dramatic skin benefits beyond mild hydration and soothing is limited, but it is well tolerated by most people.

A hydrosol from damascena rose flowers, used as a skin toner and fragrance. Rose can trigger allergic contact dermatitis in sensitive individuals, though the hydrosol form is generally well tolerated. People with a history of plant sensitivities should patch test.

Technically a liquid wax ester rather than a true oil, jojoba closely resembles skin's own sebum and absorbs without feeling greasy. It is well tolerated across skin types, including acne-prone skin, with no significant irritation or comedogenicity signal in the available data.

A lightweight, odorless emollient made by combining coconut or palm-derived fatty acids with glycerin. It spreads easily, feels non-greasy, and has a long history of use in skin and hair products with no meaningful irritation or sensitization signal.

Derived from olive oil fatty acids, this PEG-free emulsifier is used at low concentrations to hold water and oil phases together in creams. Available safety and dermatological testing has not shown meaningful irritation or sensitization at use levels.

Pentylene glycol is a humectant and solvent that also offers mild antimicrobial support in formulas. It is generally well tolerated, with only rare reports of irritation, mostly in already sensitive or compromised skin.

A light, fast-absorbing emollient that improves spreadability and gives a silky finish without grease. It is well tolerated and graded low concern in published assessments.

A rich plant butter pressed from shea tree nuts, valued for softening and cushioning dry skin. It is generally well tolerated, though very rare allergic reactions have been reported and people with tree nut allergies who are cautious may want to patch test first.

A common emulsifier and texture-softener made from glycerin and stearic acid. CIR review of this class found no evidence of reproductive, carcinogenic, sensitizing, or phototoxic effects in the studies examined.

An olive-oil-derived emulsifier, almost always paired with cetearyl olivate, that holds water and oil together and leaves a light skin-like finish. It is well tolerated and graded low concern in published assessments.

A rich, solid-at-room-temperature oil that deeply softens dry skin and hair. It is well tolerated overall, but its high lauric acid content is considered comedogenic by many dermatologists, so it can trigger breakouts in people who are acne-prone.

A lipopeptide that targets fibroblast activity to support skin elasticity and firmness. Cosmetic assessments confirm no safety concerns at recommended use levels, and it is well tolerated across skin types.

A plant-derived compound (from babchi seed) marketed as a gentler alternative to retinol, with some small clinical studies showing similar skin-texture benefits and less irritation. Evidence is still limited compared to retinoids, and formal safety review data are less extensive than for long-established ingredients.

A humectant that holds water at the skin surface for a more hydrated look. No safety concern.

A lightweight oil rich in oleic acid and antioxidants, sourced from the seeds of the moringa tree. It is well tolerated across skin types and commonly used in skincare formulas to soften and condition the skin.

A lightweight botanical oil pressed from rosehip seeds, used to nourish and condition the skin. It is generally well tolerated, though as a botanical extract it may rarely trigger sensitivity in individuals prone to plant allergies.

A stable, saturated version of squalene, a lipid the skin already produces, now usually sourced from olives or sugarcane instead of shark liver. It is very well tolerated across skin types and helps reinforce the skin barrier.

A citrus essential oil with a fresh scent, extracted from lemon peel. It contains recognized fragrance allergen constituents (limonene, citral) and can trigger contact reactions in fragrance-sensitive individuals. Additionally, citrus peel oils carry documented phototoxicity risk, meaning skin treated with the product should avoid direct sunlight.

A plant-derived wax extracted from the Euphorbia cerifera shrub native to Mexico and the southwestern United States. It provides emollient and thickening benefits and has a long history of traditional use with no documented sensitization or irritation concerns at typical cosmetic concentrations.

A plant-derived emollient and preservative formed from glycerin and caprylic acid (coconut) that helps retain moisture and supports formula stability through mild antimicrobial activity.

Xanthan gum is a microbial-fermentation-derived polysaccharide used to thicken and stabilize textures, similarly common in food. Cosmetic panel review of this and related microbial gums found them safe as used, with no meaningful irritation signal at typical concentrations.

A strong alkali used in tiny amounts to adjust the pH of cosmetics to safe, skin-friendly levels. At the pH found in finished products, sodium hydroxide is neutralized and well tolerated.

Used in tiny amounts to set a product to skin-friendly pH. No concern at those levels.

A preservative derived from caprylic acid (coconut-sourced) with antimicrobial activity that supports formula stability. Available data support its use at cosmetic concentrations.

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

A widely used, gentle preservative also common in food. It is generally well tolerated, though it can occasionally cause mild, transient irritation in people with already-compromised or very reactive skin.

The sodium salt of benzoic acid, used as a preservative in both foods and cosmetics. Decades of safety review support its use at typical cosmetic concentrations, with mild irritation the main reported issue in sensitive skin.