Artistic, customized hair cuts, color and balayage giving you modern effortless style.


Our Story

Sine Qua Non Salons began in 1993 when Chicago hair stylist Laura Boton created the go-to hair destination for Chicago’s creative community. Sine’s award-winning salons in Chicago deliver exceptional artistic haircut and hair color services in a warm and inviting atmosphere. Considering Laura’s background as a musician, it’s not surprising that SQN quickly rose to fame on the local arts scene, attracting Chicago’s artistic community to call Sine their hair home. Our team of innovative hair stylists create flattering, on trend, easy to wear looks that fit each individual perfectly.

Consistently awarded Best Hair Salon in Chicago – our three locations are the place to experience superb, on-trend service. Welcome to Sine Qua Non Salons.

Meet our stylists

Personalized, One-on-One Service.

At Sine, our stylists do both cut and color to create the “Total Look” for our guests. No jumping from one stylist to another, one visionary stylist creates the perfect cut and color for each guest, delivering the very best in one-on-one service.

Creating looks that are uniquely yours.

Known for our technical and forward thinking, non-departmentalized stylist advanced training program, Sine Qua Non Salons’ commitment to education and growth are second to none. All stylists are trained to be the very best at their craft and are committed to being in touch with every new trend and technique, keeping us fresh and inspired.

Our Award-Winning Salon Brand, Est. 1993.

Honored with industry accolades and awards by major fashion magazines for exceptional haircuts, coloring and balayage and curly hair specialization– Sine Qua Non has developed a loyal following of guests who seek customization, attention to detail, and talent like no other.

Our Reviews


COVID SAFETY is our number one priority.
As the Delta variant becomes the dominant strain in Chicago, we encourage the wearing of masks. However, our current policy is, if you have proof of vaccination you can have a maskless service if you prefer. We will continue to update our policy as things develop.

At Sine Qua Non, we know things happen. In order to ensure that we can accommodate all of our guests needs, we require that you give us at least 24 hours notice to cancel or reschedule your appointment.

We are unable to hold any appointment without a valid credit card on file. If you cancel without 24 hours notice or no show for your appointment, a charge equal to 50% of your service and will be charged to your card.

Our goal is complete happiness with your fresh cut and color. If you need an adjustment service, they are free within 2 weeks from your original appointment, preferably with your original stylist. If a refund is requested, our policy is: Call and schedule an assessment with management within 2 weeks of your service. You must come into the salon, so we can see the problem in person. If you received an adjustment at a different salon or cannot stop by so we can see your hair, we will not refund your services.

It is important to us that you are totally happy with your purchase. Product returns must happen within 30 days of purchase, be accompanied by a store receipt (and we can view in your client file) and the product must be nearly full. If you paid by credit card, you may receive a credit on your card. We are a completely cashless business.

We are committed to giving you the best one-on-one service available. If you are more than 15 minutes late, and we are unable to give you the attention you deserve, we ask that you reschedule your appointment for another day or with an available stylist.

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