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Cosmetics Ingredients
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Cosmetics Ingredients

DIHYDROXYACETONE

CAS Number 96-26-4
Chem/IUPAC Name: 1,3-Dihydroxyacetone
EINECS/ELINCS No: 202-494-5
COSING REF No: 75563
DIHYDROXYACETONE
Dihydroxyacetone is an excellent sunless tanning solution that gives the skin a beautiful sun-kissed look without exposure to the harmful rays of the sun. It works by reacting with the amino acids present on the top layer of the skin to form shades of brown depending on the usage. It is commonly found in products like sprays, lotions, and mousses that target tanning. The other name of Dihydroxyacetone (DHA) is glycerone and it appears as a white or colorless crystalline powder. Additionally, there are certain steps required for the safe usage of this ingredient such as exfoliation before application and hydration afterwards. The chemical formula of Dihydroxyacetone is C3H6O3.

What is DIHYDROXYACETONE used for?

Dihydroxyacetone finds widespread use primarily in the cosmetic industry, notably in sunless tanning products such as self-tanners, bronzers, and spray tans. When applied topically, this ingredient reacts with amino acids in the skin's outermost layer, resulting in a temporary brown coloration that simulates a natural tan without exposure to harmful UV radiation. Its application is convenient and provides an even tan appearance, making it popular for achieving a sun-kissed look year-round. Additionally, Dihydroxyacetone is used in the formulation of skin care products to impart a subtle tint, providing a healthy glow and enhancing the complexion without the need for sun exposure.

Origin

Dihydroxyacetone is primarily synthesized through the chemical reaction of glycerol with ketone-containing compounds, such as acetone or chloral hydrate, under alkaline conditions. This reaction results in the formation of Dihydroxyacetone, a three-carbon sugar, which is then purified through processes like distillation or crystallization.

What does DIHYDROXYACETONE do in a formulation?

  • Reducing
  • Skin protecting
  • Tanning

Safety profile

Dihydroxyacetone is considered safe for topical use in cosmetic products when used as directed. It does not penetrate beyond the outermost layer of the skin, making systemic absorption unlikely. However, allergic reactions or skin irritation may occur in sensitive individuals, particularly those with respiratory conditions or compromised skin barriers. Inhalation of Dihydroxyacetone mist during spray tanning should be avoided. While DHA provides a sunless tan, it does not protect against UV radiation, so sunscreen should still be used to prevent sun damage.

DIHYDROXYACETONE Alternatives

Technical profile

Property Values
Boiling Point 213.7°C
Melting Point 89-91°C
pH 3.5-4.5
Solubility Soluble in water
Viscosity Low
30
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