Sainz built her second act on chemistry as much as instinct. After a decade running Poète, a Madrid label carried in over 20 stores and through El Corte Inglés, she pivoted into haircare alongside stylist Moncho Moreno, whose four-decade client list includes campaigns for major fashion houses. Together they built a brand rooted in patented science: M28 Protein Active repairs hair at the molecular level, forming covalent bonds from cuticle to cortex; while B21 Bioactive Complex combines capixyl, caffeine, and taurine to stimulate growth and calm the scalp. Products now sell in six Latin American countries, across more than 900 pharmacies, and at Harrods, where the line became the first Spanish haircare brand stocked both in store and online. Queen Letizia and Olivia Palermo have worn or tried the founders’ work, coverage that has landed in Vogue, Vanity Fair and Marie Claire, alongside a string of beauty industry awards for standout formulas like Bond J’aime Bond and Rapunhair. Two disciplines, one shared mission: that luxury beauty should perform as beautifully as it looks; MonchoMoreno.us.