We keep a short list of products that earn their spot behind the chair at Sølvi, and Davines Heart of Glass Intense Treatment is one of them. These are the working notes our stylists pass to clients who book toning and blonde care at our downtown studio on 104 S Capitol Blvd. No marketing gloss, just what we have seen on real heads of hair through a full Boise winter and into summer.
What it actually is
Heart of Glass Intense Treatment is a silkening system built for blonde and highlighted hair. It carries a violet tone that neutralizes the yellow and brass that creep in between salon visits, plus fortifying ingredients meant to reinforce strands that lightening has stressed. We reach for it most with bleach-lifted blondes and clients sitting in highlights who notice their color going warm a few weeks after a session. The standard 5.07 fl oz runs $43, and there is a 25.36 fl oz size at $112 for clients who use it weekly and want to stop reordering.
How we tell clients to use it
Simple is the whole point here. Massage it into wet hair, leave it on for two to three minutes, then rinse. That is it. We tell people to treat it like a targeted treatment rather than a daily must, so once or twice a week is plenty for most. If your blonde runs very brassy, you can lean toward the higher end of that timing, but we do not recommend leaving it on far longer thinking it will work harder. It will not, and over-toning is a real thing.
Why it works for Boise blondes
Our climate is hard on lightened hair. Idaho air is dry most of the year, and that dryness shows up fastest on porous, lifted strands that have already given up some of their integrity in the color chair. What we like about this treatment is that the glossy, soft finish does not leave the chalky, squeaky feeling a lot of purple shampoos give you. Brass control and a little conditioning in one step matters when the dry air is already working against you. For clients who get their highlights refreshed with us, this is the at-home piece that keeps the tone honest between appointments. You can see how it fits into a full color visit on our services page.
The honest drawbacks
This is not a deep repair mask. The fortifying ingredients help reinforce stressed strands, but if your hair is badly compromised from over-processing, you need a real bonding or reconstructive treatment and a conversation in the chair, not a toning step. It is also not for everyone. If you are a natural brunette or you do not have blonde, highlights, or lifted pieces, the violet pigment has nothing useful to do for you and you are better off elsewhere. And the price per ounce on the standard size is not cheap, so if you only tone occasionally, the small bottle makes more sense than committing to the liter.
Who we hand it to
Our ideal match is a blonde or highlighted client who likes their tone cool and clean, wants one easy step in the shower, and is tired of purple shampoos that leave hair feeling stripped. If that is you, it is a genuinely good shelf staple. You can read the full product details and grab a bottle on the Heart of Glass Intense Treatment page.
Want us to dial in your tone
Product is only half of it. The other half is a stylist who knows how your specific blonde behaves in our climate. If you are fighting brass or your highlights are not holding their tone the way you want, book a visit and we will sort it out in person. Reserve your spot at our downtown studio through our online booking, and we will see you at 104 S Capitol Blvd.