I've had to give up using powdered chalk for my weight-lifting due to an allergy. Was recommend to try this product because of the product blurb... but it doesn't do what it says... its just chalk in a fast evaporating spirit, once it's evaporated its exactly the same as normal chalk, gets everywhere, dusts, gets all over the equipment... the only benefit is no dusting during the initial application to your hands...
I wish I could use chalk again for weight lifting, it's so much better, but I've given this bottle away to a friend and started using weightlifting gloves, which I'm not happy about.