About Us


From the start, we committed to sourcing the highest quality premium hair, formulating the perfect colors and optimal density while never compromising quality. Our exclusive hair is created with both consumer and stylists in mind. Every detail is thoughtfully executed and every concern is considered. Addendum, by definition, means “an addition to.” Let Addendum Hair be an addition to your beauty journey and experience the magic of luxury hair extensions.⁠⁠



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Product Details

We carry the highest density of hair per weft yet our attachment where hair is tied together sits more flush than the competition and feels lighter and comfortable. There are also cut points on each end of our wefts to allow for a customized fit for clients making the anchors less bulky and more seem-less.

Wefts come in 18, 22, and 24 inch lengths with weighing in at 20 and 30 grams respectively. We sell wefts individually allowing stylists to mix and match to create an exact style tailored to clients, eliminating waste and costs when buying full or half packs.

Why Choose Addendum?

Addendum Hair was developed by a hair extensions specialist to meet the demands and the best stylists in the industry. With quality you can see and feel, you will understand why our hair can last 6 to 12 months of continuous use. We carry the densest wefts on the market. Silicone free and uncoated, ensuring you that the silky smooth quality you feel from day one is the real thing and will last for months and months.


Meet the Founder

Lisa Ha

Lisa works in the beauty industry diligently keeping up with new techniques and trends for the benefit of her clients. She specializes in creative cuts and color, paying special attention to color formulation and razor cuts. In addition, she is known for her custom blending techniques with hair extension and hair smoothing treatments.

Lisa is always on the creative edge with both mens’ and women’s hairstyles. The satisfaction she receives from her clients fuels her desire to strive for the best. In service to her clients as well as herself, Lisa is a constant student to her art. As a Vidal Sassoon trained stylist, she has constantly driven forward in her supplementary education.

She believes that when you sit in her chair it should be a fun experience ending with a wonderful haircut! Rest assured, you will be extremely satisfied with her vibrant personality and attention to detail.

Follow Lisa on Instagram at @lisaha.addendum