As stated above, data from James et al
Advanced Cellular Technology provides the highest absorption & maximum efficacy with remarkable results

Important information Safety Information For External Use Only Ingredients Water, Glycerin, Glycereth-26, Butylene Glycol, Methylpropanediol, Vinyl Dimethicone, Niacinamide, 1,2-Hexanediol, Betaine, Isononyl Isononanoate, Isohexadecane, Sodium Polyacrylate, mmonium Acryloyldimethyltaurate/VP Copolymer, Phenyl Trimethicone, Dimethiconol, Flavor, Chondrus Crispus Powder, C18-21 Alkane , Glutathione(1,009.9ppm), Ethylhexylglycerin, Polyglyceryl-10 Laurate, Glyceryl Acrylate/Acrylic Acid Copolymer, Agar, Xanthan Gum, Hydrogenated Lecithin, Polyglyceryl-10 Oleate, Adenosine, Tromethamine, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Glucose, Limonene, Gellan Gum, Thioctic Acid, Caprylic/Capric Triglyceride, Ceramide NP, Sorbitan Laurate, Hydroxyethylcellulose, Acetyl Dipeptide-1 Cetyl Ester, Palmitoyl Tripeptide-5, Acetyl Hexapeptide-1, Soluble Collagen Directions Apply a small amount to cleansed skin and gently massage until fully absorbed

By focusing on the first 14 days of differentiation, our study concentrates on the early phases of neurodevelopment but does not include the later phases, such as synaptic maturation, network formation, or metabolic establishment
doi: 10.1113/jphysiol.2009.186262