Manuela

Cosmetic Chemist / CEO & Founder

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.

Au plus tard le Manuela

Aqua di San Giovanni: Tradition, Meaning, and Botanical Significance of St. John’s Herbal Water

Valenti's Journal

The True Origins of Beauty’s Take-Back Revolution: How By Valenti®’s Circular System Inspired an Industry

Valenti's Journal

Exploring Sensorial: How By Valenti Pioneered the Use of a Spanish Psychological Term in Skincare

Valenti's Journal

What's all the buzz about Castile soap

Formulations

Inflammaging: The Silent Driver of Premature Skin Aging

Skincare

by valenti organics manuela valenti founder of by valenti official
Dermatitis 101 - My 50+ Years Long Personal Battle with Contact Dermatitis

Skin Concerns

Mineral pigments in soaps, and why people with dermatitis should avoid them

Bio 101

The Surprising Truth About Fake Bakuchiol: Side Effects and How to Avoid Them

Cosmetology

Facial Clay Masks Dos an Don'ts - By Valenti Organics Cruelty Free Skincare
Facial Clay Masks, dos and don'ts

Skincare

The Ethical and Practical Concerns of Snail Mucin in Skincare

Cosmetology