DMAE

What Is DMAE?

DMAE (2-dimethylaminoethanol, also called deanol) is a small amine structurally related to choline, marketed both as an oral “focus” nootropic and as a topical skin-firming cosmetic ingredient. The usual rationale is that it feeds into acetylcholine-related pathways, but whether oral DMAE meaningfully raises brain acetylcholine in humans is genuinely disputed. The best-supported human effect is actually dermatologic, not cognitive.

Evidence

For skin, a split-face controlled study of a 3% DMAE (deanol) gel reported increased skin firmness on the treated side ^{1Reference 1Uhoda I et al. · 2002Split face study on the cutaneous tensile effect of 2-dimethylaminoethanol (deanol) gel — controlled studyView study →}, which is the clearest human finding for DMAE. For cognition, the picture is weak: oral DMAE has been trialled in dementia and in childhood hyperactivity with mixed or negative results, and it is commonly described as under-researched and controversial — I did not find a convincing citable trial showing oral DMAE improves memory or focus in healthy adults in this pass. Claims of “mental clarity” and “brain fog” relief in healthy users should be treated as unproven.

Dosage & Safety

No reliable evidence-based oral dose is established here; this is not a personal recommendation. The best human data are for topical use (a 3% gel) rather than an oral supplement ^{1Reference 1Uhoda I et al. · 2002Split face study on the cutaneous tensile effect of 2-dimethylaminoethanol (deanol) gel — controlled studyView study →}. Oral DMAE has been associated with side effects such as drowsiness and confusion in some dementia trials. DMAE is often flagged as something to avoid in pregnancy on theoretical grounds, but pregnancy/lactation and drug-interaction safety were not formally assessed in this pass — treat as not established. Toxicity is not yet fully characterised here.

References

1. Uhoda I, et al. (2002). Split face study on the cutaneous tensile effect of 2-dimethylaminoethanol (deanol) gel — controlled study. Skin Research and Technology. https://pubmed.ncbi.nlm.nih.gov/12236885/