Carbomer is a high molecular weight polymer compound used commonly in the cosmetic industry. These compounds can absorb large amounts of water , Increasing in volume up to 1,000 times to form gels and thick solutions that are stable and resistant to spoilage . When not in solution , they Carbomer exist as a white powder . Best known for its use in the cosmetic industry, it also has practical application in medicine and hygiene. Different number of carbomers denote their different molecular size . Carbomer are considered to be generally regarded as safe by the FDA , although high concentrations may lead to eye and skin irritation . Carbomer are commonly found in toothpaste and gels , shampoo, skin lotions , and some lubricant eye drops.