precision in every single line
The perfect tools for women rewriting their own narrative.
Long-lasting lip liners
Created to follow every one of your phases, BY.SU lip liners feature a long-lasting, water-resistant formula designed to keep your lip contour flawless throughout the day. A creamy texture, smooth application and high precision. Everything defined lips deserve.
by SU for US
by.su was born from a passion that has always been part of me: real, simple and intentional beauty.
BY.SU lip liners are vegan, cruelty-free and dermatologically tested.
Cruelty-Free
VEGAN
Pure beauty
Vegan, Cruelty-Free and Dermatologically tested
BY.SU lip liners are vegan, cruelty-free, and dermatologically tested, ensuring not only performance and comfort, but also respect for the skin and the values we uphold.
We're a beauty brand born under the light of the moon intuitive, feminine and aligned with nature's rhythm. The moon inspires every detail of our brand, from the product shades to the intention behind each launch.
Su Oliveira
A lip liner can change everything
Redefining lip beauty begins with intention. At BY.SU, we create minimalist, high-performance lip liners designed to honour the natural shape of your lips rather than transform it.
Thoughtfully formulated, beautifully balanced and intuitively designed, BY.SU lip liners bring definition without overpowering, comfort without compromise and a polished finish that reflects your natural allure.