Oral doxycycline or isotretinoin may also be recommended
Controlled increases in CO2 levels enhance hemoglobin's ability to release oxygen to tissues, effectively improving cellular oxygenation despite unchanged oxygen saturation levels

Ingredients: Water, Dipropylene Glycol, Glycerin, Niacinamide, Methylpropanediol, Glyceryl Glucoside, Galactomyces Ferment Filtrate, Glycereth-26, Erythritol, Polyglyceryl-10 Laurate, Hydroxyacetophenone, Panthenol, Caprylyl Glycol, Hydrolyzed Jojoba Esters, Ethylhexylglycerin, Adenosine, Carbomer, Glucose, Xanthan Gum, Arginine, 1,2-Hexanediol, Butylene Glycol, Citric Acid, Polyquaternium-51, Citrus Aurantium Bergamia Fruit Oil, Diethylhexyl Sodium Sulfosuccinate, Pantolactone, Sodium Citrate, Lavandula Angustifolia Oil, Glutathione, Sodium Hyaluronate, Oryza Sativa Extract, Ascorbic Acid, Pyrus Malus Fruit Extract, Dipotassium Glycyrrhizate, Hydrogenated Lecithin, Gluconolactone, Brassica Oleracea Italica Extract, Prunus Serrulata Flower Extract, Nelumbo Nucifera Germ Extract, Lilium Tigrinum Extract, Copper Tripeptide-1, Hydrolyzed Hyaluronic Acid, Hyaluronic Acid, Sodium Hyaluronate Crosspolymer, Hydroxypropyltrimonium Hyaluronate, Potassium Hyaluronate, Hydrolyzed Sodium Hyaluronate, Pentylene Glycol, Sodium Acetylated Hyaluronate, Disodium EDTA, Limonene, Linalool

They hadnt been officially approved for use as drugs, however, and many had never been studied in humans
Reduces dullness and tired-looking skin