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Ingredients Directory

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D

Dandruff. Dandruff: A chronic noninflammatory scaling of the scalp. The absence of inflammation sets dandruff apart from other scaling conditions of the scalp, namely, psoriasis and seborrheic dermatitis. Dandruff can be confused with dry scalp. Dry scalp is caused by drying conditions. Wind, indoor heat, sap moisture from the scalp, causing flaking. Dandruff is the result of accelerated cell turnover and people with oily scalps tend to suffer most from dandruff. The dandruff test: brush or shake hair over dark paper. If you see powdery flakes, it's dry scalp. If you see clumps, you may have dandruff.

D&C. This abbreviation preceding the name of a color means that the FDA has certified it as safe for use in drugs and cosmetics, but not in food. D&C means that the color can only be used externally and not around the eyes or inside the mouth. D&C colors are usually man-made.

Dantoin 685. A preservative used in shampoos and deodorants. Contains formaldehyde and N-acetal. Highly toxic. Also listed as DMDM hydantoin.

Deodorant. A product that reduces perspiration odor. There are natural deodorants containing herbs like marigold and vitamin E. Deodorants do not stop perspiration.

Dehydration. Loss of water/moisture from the body or skin.

Depilatories. Destroy hair by breaking the chemical bonds that hold it together. After using any hair removal method, a moisturizer should be applied to soothe the skin.

Dermatitis. Inflammation of the skin covering a wide variety of skin disorders and evidenced by itching, redness and various skin lesions. Can be due to one of several causes - systemic disease, skin irritants such as poison ivy, corrosives, acids and alkalies or hypersensitivity.

Dermis. The second or middle layer of skin. contains the blood vessels, elastin and collagen, etc.

Detergent. These artificial soaps may be made with a variety of chemicals and are frequently not biodegradable.

Diethanolamine. More commonly known by its abbreviation, DEA. One of many artificial detergents. It may be contaminated with nitrosamines and should be avoided.

Dimethicone. Gives a smooth feel to a cosmetic cream or lotion. Various allergic reactions and internal problems make them questionable as cosmetic ingredients. Although they're still widely used, they should be avoided. Many herbal oils, such as vegetable glycerin, can easily replace this chemical.

DMDM Hydantoin. See Dantoin 685.

Drug. According to the Federal Food, Drug and Cosmetic Act (as amended), a drug is: a. articles recognized in the United States Pharmacopoeia, the official National Formulary, or any supplement to any of them b. articles intended for use in the diagnosis, cure, mitigation, treatment or prevention of disease in human beings or other animals c. articles (other than food) intended to affect the structure or any function of the body of human beings or other animals