Jun 25 2020


Get 50% off R+Co Liter sets by using Sine’s affiliate link and entering “LITER50” at checkout. This flash sale is now live, and ends Monday, June 29th at 11:00 a.m. CST.

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May 4 2020

Foilyage Color

Check out this video of a Foilyage application by Marita. Foilyage is a technique used for even application of color or lightener. It is a very effective way to lighten brunette hair!

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Apr 13 2020

R+Co Flash Sale!

Support Siné while stocking up on your favorite R+Co products! For the next 48 hours (4/13 – 4/15), all liter sets are 50% off on R+Co’s website.

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Mar 27 2020

Update from your Friendly Neighborhood Hair Family

Sine Qua Non is proactive 😎 Due to the rapidly changing Covid-19 situation, we’ve decided to move our opening date to April 14th for now, though that will likely get pushed back by the City of Chicago. Get booked for your next service by emailing sine2@sinequanonsalons.com. We will be super busy by the time we […]

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Sine Qua Non Gift Cards are a great way to give the gift of Great Hair.
We pledge to give your special someone the perfect Sine' Experience in our warm and chic salon spaces. You can choose to have a card mailed to recipient ($5 service fee) or send it by email with no fee.
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