White powder with some clumping
Given that this product is water soluble we assume you will find the clumps do not present a problem.
In the pic below
Step 1 is a clump
Step 2 is after being pressed gently with the heel of the hand
Step 3 is after being pressed gently with a wooden spoon
Topical application of niacinamide has been shown to increase ceramide and free fatty acid levels in skin. It is also said to reduce water loss thru the epidermis but there are a lot of other options to do a better job of this. That said you can't go wrong so put this in anything you are putting on your skin including the face.
Use in your lotions/creams up to 2.5%.
Melting Point: 129C
Standard: USP