Without a calculator, dosing errors are one of the most common mistakes researchers make, especially when switching between different vial sizes or concentrations
For tretinoin, the irritation rate is higher still

Ingredients : Water, Dibutyl Adipate, Propanediol, Diethylamino Hydroxybenzoyl Hexyl Benzoate, Polymethylsilsesquioxane, Ethylhexyl Triazone, Niacinamide, Methylene Bis-benzotriazolyl, etramethylbutylphenol, Coco-caprylate/caprate, Butylene Glycol, Caprylyl Methicone, Diethylhexyl Butamido Triazone, Glycerin, 1,2-hexanediol, Pentylene Glycol, Behenyl Alcohol, Poly C10-30 Alkyl Acrylate, Polyglyceryl-3 Methylglucose Distearate, Decyl Glucoside, Tromethamine, Fragrance, Carbomer, Acrylates/c10-30 Alkyl Acrylate Crosspolymer, Sodium Stearoyl Glutamate, Polyacrylate Crosspolymer-6, Ethylhexylglycerin, Adenosine, Xanthan Gum, Centella Asiatica Root Extract, Centella Asiatica Leaf Extract, Centella Asiatica Extract, Saccharomyces Ferment, T-butyl Alcohol, Tocopherol, Asiaticoside, Madecassoside, Betaine, Inositol, Madecassic Acid, Sodium Hyaluronate, Asiatic Acid Mary & May | Tranexamic Acid + Glutathione Eye Cream (C$15 for 30g): Packaged in a squeezable plastic tube with a precise, tapered spout opening, the Tranexamic Acid + Glutathione Eye Cream is an anti-aging eye cream formulated with a trio of brightening ingredients: tranexamic acid, glutathione, and vitamin C

I just finished my last dose of my first month of semaglutide/b12 injections and so far so good