Become a stockist

Join the movement in science-led skin health.

We are building a community of trusted partners who share our mission: to deliver clinically proven collagen and wellness solutions that support confidence, energy, and strength at every age. By becoming a Proto-col stockist, you’ll be part of a brand that blends innovation with everyday rituals, helping people feel their best from the inside out.

To find out more, email: 
sales@on-group.co.uk