Addendum Salon

This is where your hair story changes.

Every extension method. Every shade. Every goal

Shown here in our tape extensions, one of the most seamless and weightless methods we offer.
Addendum Salon is San Diego’s destination for extensions done right.

Come see what everyone’s talking about.

Book your appointment → link in bio.

The K-Tip Weft Hybrid. For the client who wants it all and shouldn’t have to settle.
x Addendum Del Mar.
Book via link in bio.

Long, blonde hair is less about pushing lighter
and more about knowing when not to.

For her, we used K-tip extensions to build brightness and dimension without overprocessing her natural hair. Instead of chasing color with bleach, we let the extensions do the work. Adding lightness, depth, and thickness while preserving integrity.

This is how blonde stays long.
This is how hair stays healthy.

At Addendum, extensions are always customized to support what your hair actually needs.

The goal isn’t to see the correction.
It’s to see the finish.

Using Milbon color, we focus on balance, softness, and long term hair health.
The result is warmth that feels natural, depth that looks effortless, and color that settles beautifully over time.

The kind of finish that looks like it was always meant to be this way.

The days are layered with small moments that matter. Guidance, practice, refinement. Nothing rushed. Nothing skipped.

This is how standards are passed down at Addendum.

Custom placement. Seamless blend. Hair that actually wears well.
hybrid install by .addendum

Enjoy the final 2 days of our Black Friday sale and treat yourself (or someone you love) to professional hair care sets they’ll truly appreciate 🤎

✨ The Blowout Starter Kit: Dry Brush + Double Shot Leave-In
Valued at $115, now $85.

✨ The Ultimate Hair Kit: Dry Brush + Wet Brush + Double Shot Leave-In
Valued at $160, now $120.

(Add to cart for automatic savings!)

Ready to transform your daily hair routine with a touch of salon luxury at home? Shop now at

Have you ever dreamed of fuller, longer, or effortlessly beautiful hair? 🤎⁠
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Now is the perfect moment to treat yourself (or gift a loved one) an appointment at Addendum Salon, where extensions truly come to life: Custom-colored, expertly blended, and installed with care.⁠
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✨ The Foundation: $399⁠
1 row for a natural boost of volume and subtle length.⁠
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✨ The Signature: $649⁠
Our most-loved option: 2 rows for a full, seamless look.⁠
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✨ The Transformation: $999⁠
3+ rows for maximum fullness and dramatic length.⁠
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+ Maintenance made easy:⁠
Move-ups every 6–8 weeks at $199 per row⁠
Or pre-book 3 sessions for $499 (save $98).⁠
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Only 10 spots available for first-time clients 🤍 Book now and secure your spot at

Golden Hour 🌅
Blonde Highlight by
in Caipirinha x Dirty Martini install by