Built Behind The Chair
Addendum Hair was created by stylist Lisa Ha after nearly two decades of fitting, coloring and cutting extensions. Every piece is made to blend with your hair, wear comfortably and hold up over time.
It Started In The Chair
Before Lisa built a brand, she was the client. A poor installation and a lack of care showed her how it feels to sit in the chair and not feel looked after.
That moment shaped everything after it. Listen first, recommend second, and make hair you can trust month after month.
She Never Left It
Nearly two decades later, Lisa still works behind the chair. She is certified in nearly every major extension method and has taught for leading extension brands.
So every Addendum product is shaped by what she sees on real clients, every week.
Poured By The Weft
Addendum hair is 100% virgin and silicone-free, from responsible sources. Every shade is custom colored and named after a cocktail, from Bee's Knees to Black Magic.
Wefts are sold one at a time, so you buy the amount your hair needs and nothing extra.
Shop all hair
What We Stand For
- IntegrityWe tell you what each method can do, how long it lasts and how to care for it.
- ExpertiseCreated by stylists and refined in the salon.
- PerformanceJudged by how your hair looks months after it goes in.
- EthicalResponsibly sourced, 100% virgin, silicone-free hair.
- LongevityHair made to be cared for and to last.
- AccessibilityProfessional-grade hair, with the education to wear it well at home.
Learn With Us
Knowing your hair makes every choice easier. Start with your shade, then learn how each method wears.
Addendum Hair Pro
Stylists shop Addendum at pro pricing with an Addendum Hair Pro account.
Apply for a pro accountSee It In The Chair
Visit Lisa's salon in San Diego to see Addendum Hair worn, colored and cut by the team.
Visit Addendum Salon
