Tanning lotions

Hodge demonstrated its participation in browning reactions and it or its precursor DHA is currently a component of quick- or instant-tanning lotions (15). 

This oil is very stable and lasts for a long time without oxidizing. It was originally promoted as a substitute for spermaceti, the oil derived from whales. Most of its uses are cosmetic, in soap, shampoo, sun-tan lotions, and skin cream. Mixed with other compounds, it is useful in lubricants, candles, polish for wood and leather, and as moisture-resistant coatings. 

DHA is present in most tanning lotions at concentrations between 2% and 5%, although some... 

Pharmaceutical uses Xanthotoxin produced from the roots is widely used in the treatment of leucoderma as a component of sun-tan lotion. Its pubescent, obovate, flattened fruits are used as aphrodisiac and nerve tonic. Roots also show antimicrobial and anti-inflammatory properties. 

Consumers can be exposed to formaldehyde gas through its emission from construction materials, wood products, textiles, home furnishings, paper, cosmetics, and pharmaceuticals (Bartnik et al. 1985 Pickrell et al. 1983 WHO 1989). Members of the general population may also be exposed to formaldehyde by dermal contact with many of these products. Based on a study of dermal absorption of formaldehyde in rats from cosmetic products, Bartnik et al. (1985) made rough estimates of the formaldehyde that could be absorbed through the use of products such as hand cream or sun-tan lotion. In the case of hand cream, approximately 2 g is used per application, containing 2 mg formaldehyde. Assuming 5% absorption,... 

Mon=18mg/Winstrol twice a day (total 36mg), 3cc/Synthol into Biceps and Calf Muscles (3cc each / 12cc total), Sunless Tanning Lotion (2 times a day)... 

Some coumarins possess anticoagulant properties (warfarin is a widely used example) and other derivatives are used as fluorescent brightening agents. A number of laser dyes are based on coumarin. Cinnamic acid esters are commonly used in sun-tan lotions to absorb UV light,... 

In the fourth edition, we have added 20 new boxed topics and have updated many of the earlier ones. We have tried to include topics, such as self-tanning lotions and sugar substitutes, which are of interest to students today. We have included the most recent strategies for treatment of AIDS and new information on the use of genetic engineering to treat a variety of genetic diseases. 

Over the years research has improved the quality of the tan that is produced. Early self-tanning lotions produced an orange tan the tans from today s lotions are much more natural. The DHA used today is in a much purer form and the other components of the lotion have been redesigned to promote greater penetration. Research has also taught us that the tanning reaction works best at add pH so newer formulations are buffered... 

More recently some companies have added a new sugar, erythrulose, to the self-tanning lotions. 

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