Most health and beauty products are a waste of good money. You know this already. The primary reason is that scientists want to use chemicals to achieve a given result. If you are low on calcium, just take a calcium supplement right? Wrong!
Where do you think chickens get all their calcium for their egg shells when they do not intake much calcium or take supplements. The answer is that for the past 100 years, nutritional science has been going in the wrong direction, because it is based on certain laws of "inorganic" chemistry that do not apply to living things.