For topical applications which is what most of us are likely considering for skin and scalp benefits the key is often consistency and following the specific instructions provided by the manufacturer
While GCLC and GCLM are the subunits that constitute the GCL holoenzyme, they are not necessarily present in equimolar amounts within the cell 27

What's inside Ingredients List Water Skin Conditioning Methylpropanediol Solvent Glycerin Humectant Niacinamide Smoothing Butylene Glycol Humectant 1,2-Hexanediol Skin Conditioning Phaseolus Radiatus Sprout Extract Humectant Triticum Vulgare Sprout Extract Skin Conditioning Brassica Oleracea Italica Sprout Extract Emollient Cynanchum Atratum Extract Skin Conditioning Althaea Rosea Flower Extract Skin Conditioning Malus Domestica Fruit Cell Culture Extract Skin Conditioning Centella Asiatica Extract Cleansing Chitosan Polyglycerin-3 Humectant Propanediol Solvent Allantoin Skin Conditioning Sodium Polyacryloyldimethyl Taurate Emulsion Stabilising Polyglyceryl-10 Isostearate Skin Conditioning Caprylyl Glycol Emollient Ethylhexylglycerin Skin Conditioning Tromethamine Buffering Polyglyceryl-10 Oleate Skin Conditioning Glutathione Acetyl Glucosamine Skin Conditioning Panthenol Skin Conditioning Tocopherol Antioxidant Lactic Acid Buffering Pentylene Glycol Skin Conditioning Dipropylene Glycol Humectant Madecassoside Antioxidant Hydrogenated Lecithin Emulsifying Cholesterol Emollient Ascorbic Acid Antioxidant 3-O-Ethyl Ascorbic Acid Skin Conditioning Ascorbyl Glucoside Antioxidant Ceramide NP Skin Conditioning Caffeine Skin Conditioning Carbomer Emulsion Stabilising Xanthan Gum Emulsifying Disodium EDTA Water, Methylpropanediol, Glycerin, Niacinamide, Butylene Glycol, 1,2-Hexanediol, Phaseolus Radiatus Sprout Extract, Triticum Vulgare Sprout Extract, Brassica Oleracea Italica Sprout Extract, Cynanchum Atratum Extract, Althaea Rosea Flower Extract, Malus Domestica Fruit Cell Culture Extract, Centella Asiatica Extract, Chitosan, Polyglycerin-3, Propanediol, Allantoin, Sodium Polyacryloyldimethyl Taurate, Polyglyceryl-10 Isostearate, Caprylyl Glycol, Ethylhexylglycerin, Tromethamine, Polyglyceryl-10 Oleate, Glutathione, Acetyl Glucosamine, Panthenol, Tocopherol, Lactic Acid, Pentylene Glycol, Dipropylene Glycol, Madecassoside, Hydrogenated Lecithin, Cholesterol, Ascorbic Acid, 3-O-Ethyl Ascorbic Acid, Ascorbyl Glucoside, Ceramide NP, Caffeine, Carbomer, Xanthan Gum, Disodium EDTA Key Ingredients Benefits Concerns Ingredients Explained Water

According to the International Diabetes Federation (IDF), an estimated 462 million adults worldwide have been diagnosed with Diabetes