The actual concentration of the active ingredient is what that matters. You can be swollowing a whole bottle , or just taking 5-10ml and it makes no difference with all the new marketing gimmicks ! Plenty of the resellers out there on collogen dont even know their active ingredient and concentration level of their own product.

Im not sure what you gals think of this, but is being a slave to a particular "supplement" to maintain certain positive aspect good ? I dont see it sustainable, its like drugs, you stop it , you lose it
Im more concern on the long term effects for young girls who started their daily collagen routine at between 15-30.