Again, laser treatment is not the best way to treat PIH
The intra-oral spray is the most effective delivery system for supplemental glutathione

Ingredients Water, Butylene Glycol, Glycerin, Methylpropanediol, Niacinamide, Propanediol, 1,2-Hexanediol, Betaine, Carbomer, Hydroxyacetophe- none, Tromethamine, Glycereth-25 PCA Isostearate, Sea Water, Diphenyl Dimethicone, Panthenol, Triethylhexanoin, Ethylhexylglycerin, Xanthan Gum, Adenosine, Disodium EDTA, Fragrance, Hydrogenated Lecithin, Polyglyceryl-10 Oleate, Biosaccharide Gum-1, Glutathione, Hyaluronic Acid, Hydrolyzed Hyaluronic Acid, Sodium DNA, Sodium Hyaluronate, Stellaria Media (Chickweed) Extract, Lactobacillus Ferment, Aloe Barbadensis Leaf Extract, Dioscorea Japonica Root Extract, Hibiscus Esculentus Fruit Extract, Malva Sylvestris (Mallow) Extract, Saccharide Isomerate, Alanine, Glutamic Acid, Glycine, Serine, Threonine, Calendula Officinalis Flower Extract, PCA, Hamamelis Virginiana (Witch Hazel) Leaf Extract, Centella Asiatica Extract, Citric Acid, Sodium Citrate, Ascorbic Acid, Helianthus Annuus (Sunflower) Seed Oil, Tranexamic Acid, Caprylic/Capric Triglyceride, Ceramide NP Content 150 ml / 1.07 fl oz For Topical and Cosmetic Use Only

The inter-study variability was described by exponential error or additive error models
Hydration is critical here, both IBS and GLP-1 side effects can deplete fluids, so drink plenty of water and electrolytes if youre experiencing diarrhoea