The Volume
Society
Volume I

Volume I · The Fremont seat

Sonal Sehgal

Hair by Sona · Fremont, California

The chemist behind the chair.

Sona came to hair from pharmaceutical science. Today, she brings that curiosity to colour and extensions in her private Fremont studio.

Graphic screenprint illustration of Sonal Sehgal styling hair
Sonal SehgalHair by Sona
Colour & hair extensions · By appointmentSelected for The Volume Society

Meet Sona

A science background.
A personal touch.

We chose Sona for her colour work and the care of a private appointment. A California-licensed master stylist, she sees one client at a time.

5+ years
Behind the chair
One-to-one
Every appointment

01 / Selected work

Colour with softness.

Grey blending and long, loose waves from Sona’s chair.

Soft silver-grey colour blended through a dark base
Silver through a dark base 01
Before and after photographs of long brunette hair styled in loose waves
Brunette waves 02 / Before & after
Before and after photographs of long highlighted hair
A smoother finish
Before and after a haircut by Sona
A fresh cut
Balayage and ombré colour by Sona
Balayage & ombré
Dimensional curls photographed from behind
Curls with dimension

02 / Extensions

Find your fit.

Sona offers hand-tied wefts, tape-ins, keratin fusion and K-tip extensions. The choice starts with your own hair and the look you have in mind.

Hand-tied wefts

Wefts sewn onto a row of beads add fullness. Your natural hair needs enough density to cover the row.

Best for
Volume, thick hair
Move-up
Every 6–8 weeks
Keratin fusion & K-tip

Individual strands bonded to your hair allow flexible placement and room for updos.

Best for
Updos, flexibility
Wear
3–4 months
Tape-ins

Flat wefts sandwich small sections of your hair. They need regular re-taping and can show in very fine hair.

Best for
Medium hair, first-timers
Move-up
Every 6–8 weeks
Bridal hair under a veil, styled by Sona
Under the veil
Bridal makeup and dark curls finished with fresh flowers
Flowers in her hair

03 / The occasion

Hair and makeup.
Both by Sona.

For weddings and special occasions, Sona does the styling and the makeup, with soft glam and airbrush options.

“Sonal is a master at her craft. She was patient and listened.”

A Hair by Sona client

Your appointment

Tell her what
you’re imagining.

Call or text Sona with a little about your hair and the change you want. Pricing is by consultation.

Hair by Sona

43547 Mission Blvd
Fremont, CA 94539
Get directions
Studio
Mission San Jose · One client at a time

Best of 2025, Mission San Jose
on Google reviews, July 2025