| Francesca | 10/10/2023 |
Do you have any reports on the amount of residual nicotinic acid that is causing irritation? I just found out that this niacin is food grade. |
|
| BPC | 17/07/2023 |
RESPONNSE TO LANA The main thing to look for with Niacinamide in a serum is the pH of the formulation. The pH range should be between 4 to 6. |
|
| Lana | 17/07/2023 |
Hello, what is PH range effective when using niacinamide? |
|
| BPC | 26/04/2023 |
Respond to Terry. This is food grade but it can also be used in skin care. |
|
| Terry | 24/04/2023 |
what grade is this product? |
|