Manuela

Chimica cosmetica / CEO & Fondatrice

Manuela Valenti is the founder of By Valenti®, a cosmetic chemist, psychologist, and internationally recognized contemporary artist. With over two decades of multidisciplinary experience, she brings a uniquely rigorous and creative approach to skincare formulation and brand philosophy.

As the founder of By Valenti®, the only European skincare house in the U.S. producing authentic Castile soap, with nearly 20 years of experience in the U.S. market and a family heritage of Italian and Spanish soapmaking traditions dating back generations, she has been at the forefront of correcting misconceptions about Castile soap and advocating for authenticity in formulation. Through By Valenti, Manuela combines ancestral processes with modern science to create skincare rooted in minimalism, integrity, sustainability, and Mediterranean tradition.

At By Valenti®, Manuela leads product research and development, ingredient selection, and formulation strategy, ensuring every product reflects the brand’s commitment to efficacy, transparency, and environmental responsibility. Her background in psychology informs her consumer-centered approach, alongside her artistic practice they shape the sensory and visual language of the brand. Through her leadership, By Valenti® continues to set a higher standard for natural, science-backed honestly Italian skincare.

Latest from
Manuela

By Valenti® and the Reality of Trademark Erosion in Women-Led Brands
Hyaluronic Acid in Lip Care: Why It May Be Working Against Your Lips
The True Origins of Beauty’s Take-Back Revolution: How By Valenti®’s Circular System Inspired an Industry
White daisies, lavender flowers and chamomile flowers with in a bowl of water
Acqua di San Giovanni: tradizione, significato e importanza botanica dell'acqua alle erbe di San Giovanni.
When Eczema Isn’t Eczema: The Overlooked Fungal Infections Behind Chronic Skin Rashes
Inflammaging: The Silent Driver of Premature Skin Aging
Close-up of a woman applying skincare product to their face.
The Fat-Over-Lean Principle: A Skincare Layering Technique Rooted in Art
La guida definitiva all'anti-invecchiamento: i benefici della vitamina A, del coenzima Q10 e della vitamina C
Le preoccupazioni etiche e pratiche della bava di lumaca nella cura della pelle
Esplorando la sensorialità: come Valenti ha aperto la strada all'uso di un termine psicologico spagnolo nella cura della pelle