This is a group of products without proven effectiveness on body weight loss and/or disappearance of fat deposits in subcutaneous tissue, that are directly applied on skin as creams, gels, ointments, lotions or pads. Advertisement claims their action is exerted by draining fat cells, avoiding fat loading by stimulating fat metabolism leading to fat cell disappearance. In addition to a lack of documented evidence on effectiveness at both short or long term basis, some scientific papers speak about the dubiousness of such pretended properties. heir components are several substances like vitamin A (Retinol), vitamins B, C, D, E, Elastin, Collagen, Hialuronic acid, Alpha hydroxy-acids, AHA (Citric acid, Malic acid), Glycocholic acid, Glycerin, Salicylic acid, royal jelly, liposomes, extracts of plants like Aloe vera, Ginseng, Ivy, Gotu Kola, Horse chestnut, Ginkgo biloba, Guarana, Ruscus aculeatus (Ruscogenina) and green tea. Trace of contaminants have been found in these products like Antimony, Arsenic, Cadmium, Cobalt, Chromium, Mercury, Nickel, Lead and additives like Dioxins, Phenol, Formaldehyde, Parabenes and Phthalates that have risk of toxicity and side-effect. Cosmetic products are, over any dietetic habit, the major source of hydrocarbon-derived contaminants by the use of mineral oil (Paraffin) that get into fat tissue and breast milk. Because a great variety of toxic substances contained in these products, some of them known to be contaminants by ingestion, they should not be applied on the nipple, breast or areas with direct contact to the infant. Hands should thoroughly be washed after use. Avoid application on the nipple of creams, gels or topical products that contain paraffin to prevent absorption by the child.