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Cosi Bella Day Spa

4.5 (120 reviews)
Open 9:00 am - 7:00 pm

By appointment only

Updated 1 month ago

Services - Cosi Bella Day Spa

Haircut

Waxing

Cosi Bella Day Spa Photos

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Recommended Reviews - Cosi Bella Day Spa

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Reviews With Photos

Band of bleach from highlight foil

SAY NO TO NICOLE! DONT EVER GET YOUR HAIR DONE HERE OR BY NICOLE! I saw her twice for highlights and a hair cut. 1st time she charged me $220 and when I got home I noticed she messed up the highlights were there were horizontal lines and blotches of bleached hair. I came back and she did the exact same thing but I didn't see it till I got home. I'll attach a picture so you can see. I asked how much was she going to charge me then she had to go back into here Zelle to see how much I sent her last time which makes me think she just charges what she can get away with and doesn't actually have prices. Well she tells me $250 wtf? I say is that including tip? "Oh idk it's what I charged you last time" nah now your trying to get over on me f* that. We work too hard for our money for someone like her to get over like that. CRAPPY HAIRSTYLIST AND A THEIF!

Nicolette C.

Stephanie is the bomb! She is the best of the best. When I left my stylist in Arizona when I moved to Cali, I found Stephanie after someone had cut my hair so horribly. She has been my go to person. Although I don't come in as often as I wish, she always makes my hair so beautiful. I leave feeling so much better and happy. I tell her to work her magic and she does. This salon is a cute little spot too. Located around lots of fun shops. *I've added an old photo of her work, I'm terrible at getting them when she's finished. I have really long hair and requires a lot of time and she does it so beautifully. Everyone loves my hair. All thanks to Stephanie. She's amazing!

Confirmation of online appointment booking.

Don't make an appointment online! I made one and got confirmation via text and the website, then the day of, right before my appt, I got another confusing text saying it could not keep my appt but gave no reason. Very unprofessional!

Hair after cut
Robin S.

Zoe has my curls on lock! She layers my hair just right and my curls look better than ever and when I wear it straight it looks great too! (Color coming soon) Thank you Zoe!

Kristina F.

I love this place,, Zoe highlighted my hair, my hair hasn't looked this good in a long time,,, an the style,,,,thank you so much,, until next time

Jackie H.

I Love Cosi Bella Spa! Everyone is so friendly and all the ladies and gents that walk out look fabulous. Zoe does my hair though. She's amazing! I went from red red to blonde and it looks sooooo good. Thank you Zoe and Cosi Bella!

Barbie pink
Serra S.

I have been to this Day Spa 3 times for services with Monica. On my first visit with Monica, she was delightful, listened to what I needed, and has a very therapeutic studio with a comfy table and relaxing lighting and music. Monica provided so wax work for me very painlessly with good results. She told me if I would like to try out getting my brows tinted she would do them complimentary. My second visit was a week later, Monica was able to stay open late to accommodate my scheduled. I had an appointment to get my brows tinted, it took 45 minutes and 2 different colours, my brows looked great! Monica did not comp my brow tint but since she did accommodate me time wise and they looked great, I paid and tipped well. My 3rd visit did not go as well. I made a few comments in my review that got the attention of the owner and Monica generating some changes. I am happy to hear they made changes to thier practice and I look forward to visitng them soon. Cosi Bella Day Spa is one of the nicest salons in Martinez.

Blueish pink with a matte finish.
Lauren P.

What a difference it makes when you patron someone who knows what they're doing with your nails. Trisha took my two week old, peeling, and misshapened nails and gave them new life with this matte manicure. Patient and knowledgeable, she answered all my questions about her tools and products. She taught me a lot! I was really grateful for her taking me on such short notice as well since I had to get the manicure in between classes. I was also impressed with her organic sugar scrub and almond oil finish. They were small touches that made me appreciate the care she takes for her clients. Freshly polished and smelling amazing, my nails were saved by her! Thanks again Trisha! I really do appreciate your good work!

Omg! Nina totally exceeded my expectations on the Lash Extensions. I mean, do y'all SEE these beauties?!? Book an appt! Now. Don't delay!
Julique L.

Not sure how this will post but, yesterday I went in for a full set of Lash Extensions with Nina. Omg, these lashes, OMG, these lashes!!!! I was soooooo happy when I saw the final result. They look frigging amazing which isn't surprising considering the careful attention to detail Nina provides. I was totally comfortable the whole time, no feeling like my eyes were being stabbed or cut (bad previous experience, another Yelp review) and she really took the time to discuss lash care after the application (not my first set, but I learned some things). Looking forward to being a continued customer. Cosi Bella is becoming my spot!!

Jessica O.

I've been going to Lia for over 10 years now. Started with her at her old salon and followed her here. I live out of town and always make sure to see her when in the bay. Dark hair photo is my most recent. Red is from a few years back. Same with purple.

Merisa R.

Came back to get my hair done, Mary is absolutely wonderful individual who did a fantastic job on my hair! Did an awesome style that I have never tried before and felt like she took ten pounds off my head. Also she has a way of making you feel at home and oh so comfortable. Cosi Bella is an excellent location I highly recommend!

Shaked Y.

Sherris is absolutely amazing ! She is the most caring and sweet hairstylist I've met thus far. She really takes her time and is a perfectionist. She listens to what you want and really tries to achieve it for you. I will be going to her from here on out. I really enjoyed my experience. Thank you Sherris

Carmel highlights

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1 month ago

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2 years ago

I arranged a haircut and the hair stylist didn't show up. Guess they don't want the business?

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4 years ago

Mary, the owner, did a beautiful job on my hair. Gave me exactly what I wanted. I will definitely be back.

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13 years ago

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Ask the Community - Cosi Bella Day Spa

Review Highlights - Cosi Bella Day Spa

Monica went to work and within second, my breathing calmed, and my heart stopped pounding in my chest.

Mentioned in 33 reviews

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Cosi Bella Day Spa - hair - Updated May 2026

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