Beauty ingredients explained in plain English

A gentle botanical extract with antioxidant potential, but research on this specific species is limited.

Hirudinea Extract is a novel, natural ingredient with potential soothing benefits, but scientific evidence is limited and it may not be suitable for everyone due to ethical or allergy concerns.

Histidine is a gentle amino acid that helps keep skin hydrated and supports a healthy skin barrier, making it a solid choice for most skin types.

A synthetic peptide that may help improve skin firmness and reduce fine lines, but more independent research is needed.

Ho Wood Leaf Oil offers a gentle, linalool-rich alternative to lavender for calming skin and mind, but requires proper dilution to avoid irritation.

Ho Wood Oil offers a gentle, floral-woody scent and potential soothing benefits, but like all essential oils, it can be irritating for sensitive skin.

A gentle, antioxidant-rich fruit extract that may help soothe skin and protect against environmental stress, though research is still emerging.

A gentle, plant-based antioxidant that may help protect skin from environmental stress, though research on topical use is still limited.

Hogweed extract is a botanical ingredient with potential soothing and antioxidant benefits, but its use is limited by a moderate risk of skin irritation and a lack of robust research.

A gentle, mineral-rich clay that helps absorb excess oil and impurities without over-drying, making it a good option for normal to oily skin types.

A gentle, antioxidant-rich fern extract that may help calm and protect skin, but research is still limited.

A gentle, plant-based antioxidant extract that may help calm skin and fight free radical damage, though research is still limited.

A gentle plant extract that may help protect skin from environmental stress, though research is still early.

A gentle botanical powder with antioxidant potential, but research on its skincare benefits is limited.

A gentle, lab-grown plant extract that may help calm skin and fight free radical damage, but research is still early.

A mild floral water that may help calm and hydrate skin, but scientific backing is limited.

A gentle, plant-based extract that helps calm and hydrate the skin, though research is still emerging.

A gentle, plant-derived antioxidant that may help calm skin and fight environmental stress, though research is still early.

Holmium oxide is a rare earth oxide used as a colorant in cosmetics; it is generally considered safe at low concentrations but has limited research on skin absorption.

Homarine HCl is a gentle, marine-derived humectant that helps hydrate and soothe the skin, but research on its benefits is still limited.

Homogeranyl nitrile is a synthetic scent ingredient that adds a fresh, citrusy note but may cause skin irritation in sensitive individuals.

A synthetic fragrance ingredient that adds a fresh scent but may cause irritation in sensitive individuals, especially at higher concentrations.

A synthetic floral scent that can make products smell lovely but may cause skin reactions in sensitive individuals.

A gentle plant root extract with antioxidant potential, but research is limited and benefits are not yet well-documented.

Homonopal is a synthetic emollient that helps products feel smooth and non-greasy, but research on its long-term effects is limited.

Homosalate is a common UVB sunscreen filter that is effective at preventing sunburn, but it has raised some environmental and potential endocrine concerns that are still being studied.

Honey is a gentle, natural humectant that helps hydrate and soothe the skin, but its benefits depend on the type and purity used.

A soothing, antioxidant-rich blend of honey and herbal roots that helps calm skin and support a healthy-looking complexion.

A gentle fermented ingredient that may help calm and protect skin, but research is still limited.

A gentle, plant-based emulsifier that helps blend water and oil in creams and lotions while providing light skin conditioning.

Honey extract is a gentle, natural humectant that helps hydrate and soothe the skin, but its benefits in skincare are mild compared to pure honey.

A gentle, hydrating fermented honey ingredient that may help soothe and condition the skin.

A gentle, plant-based humectant that helps skin hold onto moisture and leaves a soft, non-sticky feel.

A gentle botanical extract with antioxidant potential, but research is limited and it's not a star ingredient.

A gentle botanical blend that helps calm skin and fight environmental stress, but its effectiveness depends heavily on formulation and concentration.

A gentle, lab-grown honeysuckle extract that may help calm skin and fight free radical damage, though research is still early.

A gentle botanical extract that helps calm skin and fight free radical damage, but its benefits are modest compared to more potent antioxidants.

A gentle fermented ingredient that may help calm skin and provide antioxidant benefits, though research is still emerging.

A gentle, antioxidant-rich botanical extract that helps calm skin and fight free radical damage, ideal for sensitive and reactive skin types.

A gentle, antioxidant-rich fruit juice that helps protect skin from environmental stress while providing light hydration.

A gentle, antioxidant-rich fruit water that hydrates and soothes skin, but research on its specific benefits is still emerging.

A gentle botanical extract that helps calm skin and fight free radical damage, but research is still emerging.

Honokiol is a gentle antioxidant from magnolia bark that helps calm skin and fight environmental stress, but more human studies are needed to confirm its anti-aging benefits.

Hoplostethus oil is a rich emollient that helps soften and condition skin, but its sustainability concerns make it a less common choice today.

Hops oil offers gentle soothing and antioxidant benefits, but its strong scent and potential for skin sensitivity in high concentrations mean it's best used in small amounts.

Hordenine may offer temporary firming effects by constricting blood vessels, but evidence is limited and it can cause irritation for sensitive skin.

Horehound extract is a gentle botanical with antioxidant and soothing potential, but human skincare studies are limited.

A gentle, lab-grown plant cell extract that may help calm skin and fight free radical damage, though human research is still limited.

A gentle botanical extract that may help calm skin and provide antioxidant support, though research is limited.

A gentle plant extract with antioxidant potential, but research on its specific benefits for skin is still limited.

A gentle botanical extract with potential soothing and antioxidant benefits, but research on its specific effects in skincare is still limited.

A gentle plant extract with antioxidant potential, but research on its specific skin benefits is still limited.

A gentle botanical extract with antioxidant potential, but research is still emerging and benefits are not yet proven in large human studies.

A gentle botanical extract with antioxidant potential, but research on its cosmetic benefits is still limited.

A novel, lab-grown ingredient derived from horse stem cells that may support skin repair, but human research is very limited and it remains a niche, high-cost option.

A gentle botanical blend that offers antioxidant and soothing benefits, but its effectiveness depends on the specific formulation and concentration.

Horse chestnut bark extract is a gentle botanical that may help calm skin and fight free radical damage, but its effectiveness in skincare is still being studied.

A gentle botanical extract that may help calm skin and fight free radical damage, but research is still emerging.

A gentle, antioxidant-rich flower extract that may help calm skin and support a healthy-looking complexion.

A gentle, soothing floral water that may help calm irritated skin and provide mild astringent benefits, but research on its cosmetic efficacy is limited.