2743 Castro Valley Blvd, Castro Valley, CA 94546
Mon
10:00 am – 8:00 pm
Tues
10:00 am – 8:00 pm
Wed
10:00 am – 8:00 pm
Thurs
10:00 am – 8:00 pm
Fri
10:00 am – 9:00 pm
Sat
9:00 am – 7:00 pm
Sun
10:00 am – 4:00 pm
Onyx is an upscale day spa offering customized services in the heart of Castro Valley.
Onyx Day Spa formerly known as the Spa has been in business for over 15 years. Customer service is our top priority! We have a staff of highly trained professionals who offer consistent quality service to our customers.
The professionals at Onyx Day Spa offer exclusive services including Hot Stone massage, body wraps, body scrubs, facials, microdermabrasion, facial peels, manicures, pedicures and waxing. We are excited to offer custom Organic Air brush spray tans and Eye Lash Extensions as well. We exclusively use Image skin care products in all of our Facial treatments. We accommodate group spa days, have on going package deals and offer monthly specials.
Onyx Day Spa is a full service Spa. We offer a wide variety of treatments, and customize each one to our guests needs or requests.
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