How Long Does It Take for Collagen to Work?
Collagen trials measured skin changes at 4 to 12 weeks, joints at around 12 to 24 weeks and nails at 24 weeks. Here's a realistic timeline, and why results aren't...
Collagen trials measured skin changes at 4 to 12 weeks, joints at around 12 to 24 weeks and nails at 24 weeks. Here's a realistic timeline, and why results aren't...