SR17 targets fibroblasts - the cells that produce collagen, elastin, and hyaluronic acid. As we age, fibroblast density declines by 35% and collagen production drops by 68%. The arabinogalactans in Mimosa tenuiflora stimulate fibroblast viability and proliferation, while mimonosides trigger cell division from within the dermis. The result is skin physically heals itself, looks younger and becomes structurally stronger and more resilient over time.

Most face creams work on the surface. SR17 works beneath it - stimulating the fibroblasts responsible for collagen, elastin, and hyaluronic acid production at a cellular level. The result is genuine skin renewal, not temporary hydration.

It is also a fundamentally different approach to retinoids. Retinoids accelerate surface cell turnover but come with well-documented side effects including redness, peeling, and sensitivity. Research has even shown that retinoic acid at higher concentrations can reduce fibroblast collagen production - the opposite of what ageing skin needs. SR17 stimulates the fibroblasts that build new skin from within, without the side effects.

We’re also British-made and small batch, meaning no mass-production. Every jar is formulated with precision and without fillers or unnecessary additives.

When starting SR17, we recommend simplifying your routine to give the ingredient the best possible chance to work. Strip back to three steps — cleanser, SR17, and SPF — and keep it there for the first 90 days. This allows your skin to fully respond to the tepezcohuite without interference from competing actives.

After 90 days, you can begin cycling other products in and out as seasonal concerns or skin needs change. Vitamin C and niaciamide are generally fine to reintroduce. However, take care with how you layer acids and retinoids - both alongside SR17 and with any other products in your routine - as combining actives can cause sensitivity and unpredictable reactions. When in doubt, introduce one product at a time and give your skin time to adjust.

No, and it never will be. SR17 is produced in full compliance with UK cosmetic regulations, which do not permit animal testing for cosmetic products or ingredients.

Apply a pea-sized amount to clean skin morning or evening. SR17 is a concentrated formulation - consistent daily use of a small amount will always outperform occasional heavy application. Each 50g jar is designed to last approximately 45 days with once-daily use.

SR17 is formulated without fragrances, fillers, or common irritants. Mimosa tenuiflora extract is well tolerated across skin types and has been used clinically on compromised skin. As with any new skincare product, we recommend patch testing before first use.

Most users notice changes in texture and firmness within two weeks. Deeper structural improvement becomes visible between weeks six and twelve. For full cellular renewal, we recommend a consistent 90-day cycle.