how to block melanin production

{"cid":"91193784","title":"Niacinamide Hydrating Body Lotion Block Melanin Production Uniform Skin Lightening","imgUrl":"https:\/\/img.chinax.com\/nimg\/16\/87\/58aa4537222c11ab38bac76e7d42-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"OEM\/ODM","Minimum Order Quantity":"2000pcs","Delivery Time":"20-25 working days","Certification":"GMP\uff0cISO","Place of Origin":"Guangzhou,China","Payment Terms":"D\/A, D\/P, L\/C, T\/T, Western Union, MoneyGram\uff0cBank transfer, PayPal","Supply Ability":"300000 Pieces Per Month","Packaging Details":"Standard Export Carton, Foam and Protective Film","Feature":"Uniform Skin Lightening","Main Ingredient":"Niacinamide,Vitamin E,Sodium hyaluronate","Gender":"Unisex","Use":"Whole BODY","Shelf Life":"3 Years","name":"Hydrating Body Lotion"}}

{"cid":"91224173","title":"Oral Glutathione Capsule 60pcs Source Blocking Reverse Reduction Of Melanin","imgUrl":"https:\/\/img.chinax.com\/nimg\/f6\/7a\/72cac70dd1d2f3dd1436ea70134a-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"Senzern","Minimum Order Quantity":"100","Delivery Time":"5-8 work days","Place of Origin":"China","Payment Terms":"T\/T,Western Union,MoneyGram","Supply Ability":"20,000 boxs \/ mon","Packaging Details":"According to customer requirements","Shelf life":"2 Years","Net Content":"60","Use":"Whitening, Brightens skin tone","Unsuitable groups":"Pregnant women and the elderly","Dosage":"One at a time","Form":"Capsule"}}

{"cid":"91221925","title":"Face Whitening Cream Beauty Cosmetics Custom Natural Skin Lightening Facial Moisturizer Cream For Black Skin Face","imgUrl":"https:\/\/img.chinax.com\/nimg\/fb\/d5\/ec2f3ee86a0e287c6d0a9b7051ec-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"OEM\/ODM","Model Number":"MS-092","Minimum Order Quantity":"1000pieces","Delivery Time":"20-25 working days","Certification":"GMPC\/ISO","Place of Origin":"Guangzhou,China","Payment Terms":"L\/C,D\/A,D\/P,T\/T,Western Union,MoneyGram","Supply Ability":"50000pieces per week","Packaging Details":"Standard Export Carton","Function":"Moisturizing, Skin Repairing, Soothing","Usage":"Twice a day, morning and night","Volume":"Customizable","Ingredients":"Vitamin C, Other, Niacinamide, Aloe Vera","Scent":"Fragrance-free","Sample":"Available","Main Ingredient":"Collagen, Peptide, Hyaluronic acid","Package":"Customized Bottles and Boxes","Target Area":"Face","Formulation":"Liquid","Supply Type":"OEM\/ODM"}}