is collagen better than glutathione Vs. for Skin Brightening Collagen vs Glutathione… which one

Glutathione juga Manfaat Gluthatione untuk Wajah Gluta adalah sebutan untuk kandungan glutathione yang merupakan kombinasi dari tiga komponen asam amino (protein), yakni cysteine, glycine, dan glutamine

Active Ingredients: Ascorbic acid (USP) 100 mg Retinol Palmitate (KP) 3,300 I.U (1,815 mg as Retinol Palmitate) Ergocalciferol (KP) 200 I.U Riboflavin Sodium Phosphate (KP) 3.60 mg Thiamine Hydrochloride (USP) 3.81 mg Pyridoxine Hydrochloride (KP) 4.86 mg Tocopherol Acetate (KP) 10 mg Dexpanthenol (USP) 15 mg Nicotinic acid amide (KP) 40 mcg Cyanocobalamin (KP) 5 mcg Biotin (USP) 60 mcg Folic Acid (USP) 400 mcg Indications: Vitamin supportive therapy (maintenance) for patients whose nutrition is supplied with parenteral solution

skin lightening, detoxification, and anti-aging treatments

What is tretinoin and what is it used for