Bi-weekly cadence is the maximum
Although research is limited research on the side effects of using glutathione for skin brightening, there are a few concerns related to the safety of this ingredient

All ingredients: Water, Butylene Glycol, Caprylic/Capric Triglyceride, Beeswax, Niacinamide, Cetearyl Alcohol, Isononyl Isononanoate, Arachidyl Alcohol, 1,2-Hexanediol, Polyglyceryl-3 Methylglucose Distearate, Behenyl Alcohol, Glyceryl Stearate, Betaine, Arachidyl Glucoside, Cetearyl Olivate, Arginine, Carbomer, Sorbitan Olivate, Allantoin, Glycerin, Panthenol, Tocopherol, Xanthan Gum, Glutathione (600 ppm), Dipotassium Glyceryl Sulfate, Ethylhexylglycerin, Disodium EDTA, Sodium Hyaluronate, Glucose, Multiple Plant Extracts (Mallow, Melissa, Yarrow, Veronica, Peppermint, Evening Primrose), Ceramide NP, Hydrogenated Lecithin, Poly Glyceryl-10 stearate, sodium hydroxide, sodium ascorbyl phosphate, biotin, folic acid, pyridoxine, cyanocobalamin, linoleic acid, riboflavin, beta carotene, thiamine hydrochloride, copper tripeptide-1, acetyl hexapeptide-8, palmitoyl pentapeptide-4, palmitoyl tetrapeptide-7, palmitoyl tripeptide-1, perfume

You have your prescription lenses and the full-on C60 lenses