I like the way they use the brown bottles, to protect from sunlight. Is that something you want for vitamin d ,I do not know. But the doctors say takle biotin, especially, when your eyebrows won't grow. Biotin is for helping this, when you have vitamin deficiency.....

Love everything about Carlson! Have used their products for 30 years! No smell or aftertastes . A marvelous company

They arrived on time and in good condition. Pleased with product and item. Has made a difference in hair and somewhat for nails. Great product for an excellent price! Very convenient, reasonable, and helpful for both product quality, quantity, price, and availability. Thank you very much!

Hair and nails have gotten stronger!

Nutritional supplement

El producto llego bien pero lo dejaron en una dirección diferente, se hubiera perdido , no tocan la puerta ,