Addendum Salon specializes in luxury extensions and custom color. Our team of master level artists takes a thoughtful, personal approach to every guest. With our own extension line and premium products in-house, every detail is carefully considered. The result is seamless, refined hair that feels effortless, natural, and truly yours.

The Standard of Modern Beauty

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SIGNATURE COLOR

Our master colorists create custom formulations specific to your hair. Dimensional balayage, complete transformations, precise root work—every application is controlled and intentional. Beautiful results that maintain integrity.

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Our extension specialists are among the best in the industry. We use our own proprietary extension range developed in-house, giving us complete control over quality, application, and results. Seamless integration, natural movement, lasting fullness.

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premium

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precision styling

Our stylists execute precision cuts tailored to your hair's texture and natural movement. Whether it's a complete transformation or refined shaping, every cut is intentional, controlled, and designed to enhance your overall look.

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PRECISION STYLING

PREMIUM EXTENSIONS

SIGNATURE COLOR

Located in coastal North County San Diego, Addendum specializes in luxury hair transformations. Our master colorists and extension specialists deliver precise, beautiful results that other salons can't replicate. Our wefts are engineered for superior density and comfort, reinforced attachment sites create seamless, natural movement while remaining lighter and less bulky than anything else available. Every weft is designed for a customized fit that disappears completely.

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San Diego's first salon with a complete, proprietary line of luxury hair extensions. 

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Extensions are not an add-on at Addendum. They are part of our foundation.

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meet the team

Addendum is a collective of experienced stylists working across color, extensions, and cutting, each bringing a deep understanding of hair as both craft and material. Our team works collaboratively, with shared standards around integrity, longevity, and real-world wear — not trends for trend’s sake.

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Let's meet the team behind Addendum Salon, and who you'll work with for your transformation.

Meet Double Shot

A leave-in conditioner so good, the whole family will want it. Powered by a proprietary blend of jojoba, coconut, and silk, Double Shot is strong enough to tame the fiercest frizz yet gentle enough for daily wear. It’s not just a product; it’s a shield for your investment.

The Leave-In Cocktail

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The Proof is in the Ritual.

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Whether it's extensions or your natural hair, your locks deserve tools designed to protect them. Our signature brush collection is engineered to detangle without damage, maintaining soft, healthy, and believable hair from root to tip.

A salon made for you, every step of the way.

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Your hair deserves more than service, it deserves craftsmanship.

At Addendum, we approach extensions, color, and styling as an art form. Our work blends technique with intention, delivering fuller, more beautiful hair shaped with elegance, precision, and care. Beyond service, we set our own standards: crafting top-of-the-line, in-house extensions for unmatched quality, curating luxury lines such as Milbon and Oribe, and developing our own complete product collection. Every detail reflects our commitment to artistry and innovation, ensuring a salon experience found nowhere else.

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Addendum isn’t just hair(care). It’s the professional standard for extensions, now, made personal. Explore our collection of Wefts, Tapes, K-Tips, Accessories, and more. 

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The Standard of Modern Beauty

Addendum Salon specializes in luxury extensions and custom color. Our team of master level artists takes a thoughtful, personal approach to every guest. With our own extension line and premium products in-house, every detail is carefully considered. The result is seamless, refined hair that feels effortless, natural, and truly yours.

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