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Sunscreen Technology, Regulations and Formulations
By Ken Klein
Posted: March 21, 2007, from the April 2007 issue of Skin Inc. magazine.
page 3 of 5
Typical Sunscreen Emulsion
Chelating agent 0.1–0.2
Water-soluble sunscreen Drug level
Organic sunscreen (UVA/UVB) Drug level
Inorganic sunscreen Drug level
Film former 1.5–3.0
Emollient ester 5.0–10.0
Silicone (cyclic or dimethicone) 2.0–5.0
Secondary emulsifier 0.25–1.0
Dispersing agent (for inorganic) 0.1–0.2
*QS is an abbreviation of the Latin phrase Quantum sufficiat, which means “quantity sufficient.” In other words, the formulator can add the specific ingredient “as needed” for a specific effect (fragrance, color, etc.) or until the desired total volume of the formula is reached.drug?
- Articles recognized in the official United States Pharmacopeia, official Homeopathic Pharmacopeia or official National Formulary, or any supplement of them.
- Articles intended for use in the diagnosis, cure, mitigation, or treatment of disease in man or other animals.
- Articles, other than food, intended to affect the structure or function of the body of man or other animals.
- Articles, intended for use as a component of any items specified in the prior stipulations.