N,N-Dimethylethanolamine, also known as Deanol, is an organic compound with the formula (CH3)2NCH2CH2OH. It is a bifunctional compound containing both tertiary amine and primary alcohol functional groups. It is a colorless viscous liquid. It is used in skin care products that improve skin tone and is also taken orally as a nootropic. It is prepared by ethoxylation of dimethylamine.

DMAE is a precursor to choline, a neurotransmitter involved in muscle movement, memory and mood. DMAE is also a precursor to carnitine, a compound that helps the body burn fat.

DMAE is a skin care ingredient said to improve skin tone and reduce the appearance of wrinkles. It is also said to improve alertness and cognitive function.

DMAE is generally considered safe when used in the amounts found in skin care products. However, when high doses of DMAE are taken by mouth, side effects such as headache, nausea, and vomiting may occur.

DMAE is a controversial substance. Some believe it is effective in treating a variety of ailments, while others believe it is not effective and may even be harmful. More research is needed to determine the safety and effectiveness of DMAE.