Exfoliating soap: Sodium Palmate, Sodium Palm Kernelate, Aqua (Water), Parfum (Fragrance), Prunus Armeniaca (Apricot) Seed Powder, Glycerin, Glutathione, Sodium Ascorbyl Phosphate, Palm Acid, Palm Kernel Acid, Sodium Chloride, Tetrasodium EDTA, Tetrasodium Etidronate, Mica, CI 77891 (Titanium Dioxide), CI 19140 (Yellow 5), CI 77491 (Iron Oxides), CI 77492 (Iron Oxides), Benzyl Alcohol Serum: Aqua (Water), Propylene Glycol, PEG-8, Glycerin, Glutathione, Ascorbyl Tetraisopalmitate, Sucrose, Cellulose Gum, Chondrus Crispus (Carrageenan) Extract, Ceratonia Siliqua Gum, Kojic Acid, Butylene Glycol, PPG-26-Buteth-26, PPG-8-Ceteth-20, PPG-4-Ceteth-20, PEG-40 Hydrogenated Castor Oil, Polysorbate 20, Deceth-7, Benzophenone-4, Disodium EDTA, Tocopherol, Citric Acid, Sodium Citrate, Sodium Dehydroacetate, Sodium Sulfite, Sodium Metabisulfite, Phenoxyethanol, Methylparaben, Chlorphenesin, Parfum (Fragrance), CI 19140 (Yellow 5), Benzyl Alcohol Cream: Aqua (Water), Paraffinum Liquidum (Mineral Oil), Cetearyl Alcohol, Petrolatum, Synthetic Wax, Polysorbate 60, Glycerin, Sorbitan Stearate, Dimethicone, Caprylic/Capric Triglyceride, Glutathione, Ascorbyl Tetraisopalmitate, Diacetyl Boldine, PEG-40 Hydrogenated Castor Oil, Sodium Levulinate, PPG-8-Ceteth-20, PPG-4-Ceteth-20, Butylene Glycol, Glyceryl Stearate, PEG-100 Stearate, Palmitic Acid, Stearic Acid, Levulinic Acid, Carbomer, Xanthan Gum, Disodium EDTA, Tocopherol, Triethanolamine, Citric Acid, Sodium Citrate, Sodium Benzoate, Sodium Metabisulfite, Methylparaben, Parfum (Fragrance), Benzyl Alcohol

There are a few ways to administer both therapies
It is important to note that glutathione levels in the body can be reduced by a number of factors, including poor nutrition, environmental toxins, stress, medical conditions, and aging
PMID: 27983438
A 5 mg vial at 1 mg per week gives five weeks, which is only slightly beyond the 28-day window