Molecules de Fonction
Founded by the co-creator of cult brand Grown Alchemist, MdF is built on a simple belief: skin health is functional, not fantastical. It’s shaped by sleep, stress, diet, hormones, and environment — not miracle ingredients or ten-step routines. MdF creates fewer products, using only ingredients that genuinely perform. No invented molecules. No greenwashing. No hype. Their bioliterate approach respects intelligence, values clarity. No shame based selling. No false promises. Just effective skincare that speaks human, not marketing.
Co-founder of Grown Alchemist — a globally recognized clean beauty brand known for merging biology with cosmetic chemistry. With over two decades of experience in product development, Muijs built his reputation on a deep understanding of cellular skin function, focusing on how ingredients interact with the body to support repair and regeneration rather than simply masking concerns. Grown Alchemist became a pioneer in science-led, ingredient-conscious skincare, emphasizing that healthy skin is the result of optimized function — not quick fixes.
Every product prioritizes ingredients that deliver performance without compromise. MDF doesn’t rely on buzzwords or trend-driven formulas — instead, it centers on well-understood actives that support skin health and resilience.
A gentle cleanser. A solid serum. A proper moisturizer. That’s the foundation. No unnecessary 10-step rituals. No over-exfoliation. Just consistent, effective care that works with your skin — not against it.