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| Hazelnut oil Oil extracted from the hazelnut; used as an emollient. |
| Hematin Iron-containing portion of blood. It has no known benefit for skin. |
| Hemolymph extract Extract of crustacean blood. It can be a source of proteins or other water-binding agents, but there is no research showing it to have special benefit when applied topically on skin. |
| Hepatocyte growth factor (HGF) Stimulates division in cells lining the liver, skin cells, and cells that produce skin color. |
| Hexyl laurate A skin conditioning agent and emollient that is a mixture of hexyl alcohol and lauric acid. |
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| Hierochloe Odorata extract Commonly known as sweet grass, it may have antioxidant properties. |
| Honeysuckle extract Fragrant plant extract that can be a skin irritant, but may also have anti-irritant properties. |
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| Horseradish Can irritate skin and should never be applied to abraded skin. |
| Hyaluronic acid Hyaluronic acid (HA) is a glycosaminoglycan (GAG), which is a substance that attaches to collagen and elastin. Hyaluronic acid is present in every tissue of the body, and it performs many important functions. It helps deliver nutrients to and carry toxins from cells that do not have a blood supply. HA also encourages water retention in other bodily tissues. It is found in large concentrations in the fluid-filled space between cells. Hyaluronic acid locks moisture into the skin, keeping collagen and elastin moist and promoting a youthful appearance. Cosmetic products containing hyaluronic acid help to hydrate the skin, allowing it to appear smoother and more radiant. Clinical studies have shown that it also helps wounds heal more quickly, and can reduce the appearance of both old and new scars. |
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| Hybrid sunflower seed oil Non-volatile plant oil used as an emollient. A natural source of tocopherols (vitamin E). |
| Hydrogenated castor oil hydroxystearate Used as an emollient and thickening agent in cosmetics. |
| Hydrogenated coco-glycerides Used as an emollient and thickening agent in cosmetics. |
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| Hydrogenated palm glyceride Used as an emollient and thickening agent in cosmetics. |
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| Hydrogenated polyisobutene A synthetic polymer used as a skin-conditioning agent and emollient. |
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| Hydrolyzed actin Form of protein that has water-binding properties for skin. |
| Hydrolyzed conchiolin protein A component of oyster shell. It can have water-binding properties for skin. |
| Hydrolyzed Elastin With high affinity to skin and hair, Hydrolyzed Elastin provides a natural protein layer of protection against environmental factors. It provides excellent smoothing properties and substantivity to skin. Hydrolyzed Elastin is mainly composed of Beta-Elastin, the low molecular weight elastin peptide. The B-Elastin and the elastin peptides are incorporated into the elastin matrix of the skin consequently increasing the elasticity of the skin. |
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| Hydrolyzed Rice Bran Protein, Glycine Soja (Soybean) Protein, Oxido Reductases Hydrolyzed Rice Bran Protein, Glycine Soja (Soya Bean) Protein, Oxido Reductases is an important new skin treatment active that reduces dark circles and puffiness around the eyes. It improves micro-circulation, strengthens native collagen and elastin matrix, and reduces the presence of free radicals to delay the visible signs of premature aging. Because the complex inhibits elastase and collagenases, it reduces the effects of chronic UV radiation on the connective tissue, to help the skin retain its natural firmness. |
| Hydrolyzed vegetable protein Helps to stabilize collagen fibers and prevent a some degradation thus helping to avoid premature aging of the skin. Hydrolyzed Vegetable Protein shows a significant moisturizing profile and penetrates the stratum corneum. It can be incorporated in cosmetic formulations such as emulsions, gels, sera, etc., where a skin regeneration effect is desired. |
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| Hydroquinone Skin care products containing hydroquinone are popularly referred to as bleaching creams or lightening agents. These skin care products are used to lighten hyperpigmentation, such as age spots and dark spots related to pregnancy or hormone therapy (melasma or chloasma). Some over-the-counter skin care products contain hydroquinone, but your doctor can also prescribe a solution with a higher concentration of hydroquinone if your skin doesn't respond to over- the-counter treatments. If you are allergic to hydroquinones, you can use products containing kojic acid instead. |
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| Hyssop Fragrant plant extract that may have some antibacterial properties. |
