Erythema cosmetics

Carlin RB, Carlin CS (2001) Topical vitamin C preparation reduces erythema of rosacea. Cosmetic Dermatol 2 35-38... 

Cosmetic and detergent-based materials such as face creams, shower gels, deodorants, etc. are specifically designed for frequent skin contact, even to very sensitive areas of the body. An individual may experience a wide variety of skin reactions to a topically applied material. These reactions are not always visible, for example, erythema or dryness and may be subjective reactions such as stinging,... 

Acute toxic contact dermatitis may be induced by a single application of a toxic material. One local inflammatory skin reaction is characterized by erythema and oedema. This type of reaction occurs following contact with materials such as acids, alkalis, solvents, and cleansers and is rarely associated with topical application of medicinal or cosmetic products. In contrast, irritant contact dermatitis (a superficial non-immuno-logically based reaction) may occur after repeated exposure to many substances, including topical pharmaceutical agents. The reaction is usually localized to the site of exposure and usually diminishes after the stimulus has been removed. Some materials can stimulate an immune response following an initial topical application. Any future exposure may result in an inflammatory immune reaction, an allergic contact dermatitis, or sensitization. 

In many kinds of skin diseases a therapy with UV-light is applied the same lamps are used for cosmetic tanning. Therefore, the different action spectra should be known with high accuracy to avoid unwanted effects. Such action spectra of medical interest are the erythema curve (the action spectrum of sunburn) and action spectra after oral or local administration of photosensitizers. 

It is important not to confuse an allergy with the skin s natural response to the chemical peel applied behind the ear. A highly localized and normal skin reaction to the peel will occur erythema followed by flaking. The appearance of any blistering or pruritus contraindicates any further contact with resorcinol completely and definitively. If a patient is allergic, Unna s paste causes reversible facial eczema, with no cosmetic benefit. 

The injection can also be given 8 days after the phenol peel, if not done beforehand. Injecting botulinum toxin during the post-peel period of erythema and edema increases the risk of the toxin moving as well as the risk of temporary cosmetic complications caused by the toxin. The duration of the toxin s effect does not seem to change much, however. 

Erythema multiforme-like symptoms were demonstrated to F. D, and C. Green No. 5 (Fast Green) which is a non-azo dye, approved for use in food, drugs and cosmetics in the United States (Grater 1976). Quinine present in bitter drinks may induce fixed reactions, toxic epidermal necrolysis, or a scarlatiniform rash (Derbes 1964 Calnan and Caron 1961 Callaway and Tate 1974). 

Severe phototoxic reactions occurred in four patients undergoing methylaminole-vulinate photodynamic therapy for histologically confirmed basal cell carcinomas or actinic keratosis on the nose [29 ]. All complained of severe discomfort, burning, and a stinging sensation during irradiation. They also developed severe phototoxic reactions, with erythema, edema, and crust formation, which spread widely outside the clinically affected areas. After topical mupirodn there was complete healing within 7 days with excellent cosmetic results. 

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