Lightening is the most damaging service in the salon and the one with the least room for improvisation. Blond Studio is a system: a lightener, a developer, a ratio and a technique. Get any one of the four wrong and the other three cannot save it. Here is the whole range and how the pieces fit.
The lighteners
Blond Studio 9 Bonder Inside — up to 9 levels, bonder pre-mixed
The high-lift powder for the services where the client arrives dark and wants to leave blonde. The bonding agent is formulated into the powder rather than added at the bowl, which removes the single most common source of error in a bonded lightening service — a mis-measured or forgotten additive. Two sizes: a 30 g sachet for one service or a trial, and a 500 g tub for the back bar.
Blond Studio 9 Levels Multi-Techniques — up to 9 levels, 500 g
The same nine-level lift without the built-in bonder. One powder for balayage, foils and freehand off-scalp work, mixed to whatever consistency the technique needs. If you already run a separate bond additive you prefer, this is the powder to pair it with.
Blond Studio Multi-Techniques 8 — up to 8 levels, 907 g
The everyday workhorse in the big tub. Eight levels covers most of the lightening that actually walks through the door, and 907 g is the size that stops the back bar running out mid-service. If you are opening a new 500 g pack every fortnight, this is the pack that makes sense.
Blond Studio 7 Platinium Plus — on-scalp paste, 500 g
A paste, not a powder, and that is the point. On-scalp platinum work needs a product that holds an even film against the scalp through a long development instead of drying out at the ends of the section. Rated to a maximum of 50 minutes with Nutri-Developer — the manufacturer's ceiling, not a suggestion.
Blond Studio No Bleach Lightening Cream — 60 ml tube
Lightening in a colour tube, without bleach. It mixes and applies like colour rather than like lightener, which makes it far easier to control on a fine section. This is the tool for French blending, face framing and soft brightening — the client who wants brighter, not blonder, and whose first question about highlights is whether it will wreck their hair.
The developers
| Developer | Volumes | Use with | Ratio |
|---|---|---|---|
| Blond Studio Nutri-Developer | 20 / 30 / 40 | Platinium, Platinium Plus and the Blond Studio powders | 1:1, 1:2 or 1:3 by consistency |
| Blond Studio 9 Oil Developer | 20 / 30 | Blond Studio 9 lightening | By lightener and technique |
The oil developer keeps a mixed lightener workable and smooth through a full-head application, where a standard aqueous oxidant can stiffen before you have finished the back section. It is also more comfortable against the scalp.
Which volume, by technique
- Balayage: 20, 30 or 40 volume Nutri-Developer. Hand-paint or work off a planchette. Heat may be applied for the final ten minutes of processing.
- Foil highlights: 20, 30 or 40 volume. Use Easi-Mèche, Sweet Mèches or cellophane for a more defined result.
- Global on-scalp lightening: 30 volume only. Divide into thin sections and apply evenly and generously.
Ratio is consistency, not strength
This is the part people get backwards. With Blond Studio, the volume sets how far the lightener lifts. The ratio — 1:1, 1:2 or 1:3 — sets how thick the mix is. A thicker mix (closer to 1:1) holds its shape on a hand-painted balayage section and does not bleed into the hair around it. A looser mix (closer to 1:3) saturates a foil evenly. Choosing the ratio to change the strength is how you end up with a patchy result.
After the lift
Lightened hair is porous, fragile and almost always brassy. The finish is a demi-permanent: Dia Light is the acidic gloss designed for exactly this moment — no ammonia, no lift, 2 to 20 minutes, and 2x less breakage than untreated hair. Reach for the ash and iridescent reflects, or add a Dia Light Booster to neutralise what the standard shade cannot.
Safety, and we mean it
Strand test before every lightening service. Patch test the toner or colour that follows, 48 hours ahead. Mix in a non-metallic bowl. Protect the client's skin and your own. Check the lift visually every five to ten minutes rather than trusting the clock, and never exceed the maximum development time printed on the pack. Rinse, shampoo, and follow with a post-lightening treatment before you tone.
Shop the range on our L'Oréal Professionnel collection, and see our colour system guide for the difference between INOA, Majirel, Dia Light and Dia Color. Free shipping on Canadian orders over $120.