What Is Growth Factor Sunscreen?
We coined the term. Here’s why — and what it means for your skin, your routine, and your future self.
You won’t find “growth factor sunscreen” in any dermatology textbook — because we created the concept. Not as a marketing trick, but as an honest answer to a question no sunscreen brand had yet asked: what if protection and regeneration happened at the same time?
Why We Made It Up — On Purpose
Sunscreen has existed for decades, and for most of that time, it has done exactly one thing: sit on your skin and block UV rays. Effective, yes. Inspiring? Rarely. The category was built on prevention — which matters enormously — but it stopped there.
We started asking a different question. Growth factors are signaling molecules the skin relies on to communicate repair, renewal, and cellular regeneration. Among the most studied is kinetin — a naturally occurring cytokinin originally discovered in plants, now recognized for its ability to mimic growth factor activity in human skin, slowing cellular aging without irritation.
We asked: what happens when you bring that level of cellular intelligence into your daily SPF? The answer became Growth Factor Sunscreen — a Sonrei original that doesn’t just shield your skin from the future. It actively helps your skin renew from within.
Protection was never enough. We wanted to create something that works while you live your life — not just in spite of the sun, but alongside it.
What It Actually Does
Kinetin is a cytokinin — a class of plant-derived compounds that regulate cell division and growth. In skin, it works by supporting the fibroblast activity responsible for collagen synthesis, helping to maintain the structural integrity that UV exposure gradually degrades. Unlike many anti-aging actives, kinetin achieves this without sensitizing the skin or triggering inflammation.
Paired with broad-spectrum SPF, the result is a formula that simultaneously defends against new UV damage while supporting the skin’s own renewal mechanisms. It isn’t anti-aging in the fear-based sense. It’s longevity science, made wearable.
Defend
Broad-spectrum SPF guards against UVA and UVB daily — seamlessly, without residue.
Renew
Kinetin, a plant-derived cytokinin, supports cellular renewal by mimicking the skin’s own growth factor activity.
Refine
Formulated to feel weightless, translucent, and luxurious — a ritual, not another step.
Who It’s Designed For
Growth Factor Sunscreen isn’t for everyone. It’s for those who have moved past trend-driven skincare — and arrived somewhere quieter, where efficacy, elegance, and longevity are the only criteria that matter.
- Discerning women 34–55 who view skincare as an investment in how they age — intentionally, radiantly.
- Spa and wellness professionals seeking formulas their clients will trust and return for.
- Men who prioritize performance skin health and want science without ceremony.
- Anyone who has ever wanted their SPF to do more than protect.
A New Category, Built on Conviction
We didn’t create Growth Factor Sunscreen to stand out on a shelf. We created it because we believe protection should evolve — and because “just SPF” has never been enough for the people we design for.
Every Sonrei formula begins with a question: what does skin actually need? Then we find the most refined, science-backed answer we can. Growth Factor Sunscreen is that answer applied to the sun care category — elegant, grounded, and built for how intelligent skin care is actually lived.
Ready to experience it?
Growth Factor Sunscreen. Crafted for every kind of skin, every kind of sun seeker.
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Blog posts
What Is Growth Factor Sunscreen? (We Made It Up — Here's Why)
You won't find "growth factor sunscreen" in any dermatology textbook — because Sonrei created the concept. Here's what it means, why we built it, and who it's designed for.
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