Highlights formula

Highlights formula: level 5 to 8

One head, planned end to end: a virgin light brown who wants light blonde foils with her brown kept, the bowl, the first foil, the check, the toner, and the faults a 5 shows.

Published 2026-09-22, updated 2026-09-23. Written by the Easy Hair Edit team and checked against the rules the rest of the site follows.

Before and after: light brown hair at level 5, then foil highlights lifting it to level 8, light blonde
Left: light brown hair at level 5, before. Right: warm light blonde 8 inside the foils, yellow at the rinse, cool or sandy once toned, her natural light brown between them, after powder lightener with a bond builder in the bowl on 30 vol, 45 to 60 minutes in the foil. Illustration, not a photograph.
The formula
In the chair: 2 hours for a partial, a half-day for a full, toner included Medium Lasts Toner 4 to 8 weeks; the foils 6 to 10 weeks before the regrowth asks for a retouch
Product
Powder lightener with a bond builder in the bowl, or one built in; toner after: demi 8.1 (8A) with 8.2 (8V) through the lengths, and a 6N or 7N tap at the root if she wants the line softened
Developer
30 vol (9%) on her virgin 5, 20 vol (6%) on any piece lightened before; the toner on 10 vol (3%) or the line's toning developer
Ratio
1:2 by the tub, some tubs 1:3
Amount
One scoop, about 30 g or an ounce, to 60 g of developer per bowl, a scoop and a half at most, mixed fresh as the foils go up
Processing
45 to 60 minutes in the foil, the first one opened from 25 minutes; toner 5 to 20 minutes, watched
Result
Warm light blonde 8 inside the foils, yellow at the rinse, cool or sandy once toned, her natural light brown between them

Steps

  1. Ask before you section: where she parts it, whether it goes up in a ponytail, the photo, and whether she wants icy, which from a 5 is a session or two rather than one.
  2. Patch test 48 hours ahead, behind the ear or in the crease of the elbow, every time the product changes.
  3. Mix one scoop of lightener with 60 g of 30 vol at 1:2 in a non-metal bowl, whisked smooth, the bond builder at its own dose. Small bowls, fresh as you climb the head, because the mix swells.
  4. Off her natural part, take sections thin enough to see through. Weave the hairline and the top, slice where she wants it brightest, hold each section out at 90 degrees and pull the foil tight to the scalp.
  5. Lay the lightener just under the fold, a finger's width down for some colorists and as close to the scalp as the foil allows for others, and never past the edge. Saturate both sides of the hair, feather the top, and leave natural hair between the foils.
  6. Open the first foil from 25 minutes and every 5 to 10 after. Yellow, to pale yellow, is the finish. Foils that get there come out with a water bottle and a towel while the rest keep going, up to 60 minutes. Wet hair reads a level darker, so judge it dry.
  7. Shampoo, condition, towel-dry. Tap the root with a 6N or 7N on 10 vol for 3 to 5 minutes if she wants the line softened, lean her back, then the 8.1 and 8.2 through the lengths, wiped every 5, rinsed before it goes gray.
From the chair
  • If you foil slowly, the first side goes on 20 vol and the second on 30 so both finish together, and some colorists start a first-timer at home on 10 vol for the same reason.
  • The sideburns, the widow's peak and the hair behind each ear get a foil of their own, even three strands, or a dark patch shows the first time she pulls it back.
  • Purple shampoo once a week from the second wash is upkeep for the toner. It will not tone a foil that came out orange, and it will not lighten anything.
Written for this head

Powder lightener with a bond builder, mixed 1:2 with 30 vol on a virgin level 5 or 20 vol on any hair lightened before, in see-through foils for 45 to 60 minutes, read by opening the first foil, then a demi 8.1 (8A) with 8.2 (8V) on 10 vol through the lengths. The foils rinse yellow, which is what a level 8 looks like before its toner. The toner turns that yellow into the blonde in the photo, and her natural 5 left out between the foils is what keeps it from reading as stripes.

She is a natural 5, light brown by the chart and darker than it sounds, never colored, worn up most days. The photo is light blonde with brown showing through, brightest at the face. In foils that is a level 8 light blonde between the brown, one visit on virgin hair.

Her ask, and what a 5 allows

Blonde pieces with brown between them, bright at the face. A virgin 5 in foils reaches a warm 8 in one sitting. Icy is a session or two, and that is worth saying before the first foil. Her part places the foils, and her ponytail adds one at the sideburns, the widow’s peak and behind each ear.

How light can light brown hair go with highlights?

A warm level 8 in one foil session, sometimes a 9, from a natural 5. The lift runs red-orange, orange, gold, yellow, and a 5 sits on orange longest, so a foil opened too early shows gold. Foils hold the scalp’s warmth and lift lighter and cleaner than open air. Pale yellow is the ceiling for the day.

20 or 30 volume developer for highlights on brown hair?

Thirty on her virgin 5, 20 on any piece that has seen lightener before, and 40 stays out of these foils. Twenty, the everyday foil developer, lifts evenly and stays at level. The 30 vol a virgin or dark start gets covers a 5 asking for an 8. Mix 1:2 by the tub, some 1:3, loose enough to move through a weave, one scoop per small bowl, because it swells.

Can 40 volume get the foils there faster

Faster at the start, then it dies out and the cuticle pays. It does get run in foils, and more often the answer is never, so it stays off this head. A virgin 5 reaches an 8 on 30 vol inside the hour.

Her first foil, start to fold

Off the part, a section thin enough to see through. Back-to-back slices at the hairline, then babylights packed close. Behind that, a medium weave with hair left out between foils, her lowlight. Hold the section straight out and push the foil tight to the scalp. Lightener starts just under the fold, never past it. Saturate both sides. Feather the top in peaks.

Fold it tight and move on.

Why do my highlights look stripey

The pieces were too wide, every foil on top was a slice, or a straight-back grid split at the part into stripes. A chunky piece lifts warm and slow and shows. A root tap softens them today, finer weaves between them next visit.

Yellow is the finish line

One timer when the last foil is in. From 25 minutes open the first foil placed, every 5 to 10 minutes. Finished is yellow to pale yellow with no gold left, up to 60 minutes where the foils went on at 20. Rinsed at 20 because it looks yellow, a 5 comes out ginger. The minutes by texture are a first look, not a rinse time.

Faults on a 5, and the fix

FaultWhat you seeThe fix
Bleed marks, tiger stripesBright stripe at the root, past the foilStart under the fold, a root tap today
Hollow spotsPolka dots inside a pieceSaturate both sides, refoil it on 20 vol
Ginger foilsOrange or gold against the brownOut too early, tone at the level reached, blue base
Line of demarcationHard edge where a retouch startsFeather the foil top, regrowth only
Finished foils come out first A foil at pale yellow by 35 minutes does not wait for the last one in. Water bottle, towel, a bond treatment on those ends, and the rest goes on to 60.

Tap the root, tone the ends

Shampoo, condition, towel-dry, two bowls at the sink. A 6N or 7N demi on 10 vol tapped over the top inch, 3 to 5 minutes. Twenty minutes makes it a smudge, and it can be skipped, because a retouch must lift through that deposit and can band there. Then 8.1 with 8.2, the light blonde toner, violet for the yellow and blue for what orange is left, 5 to 20 minutes, wiped every 5. A natural 4 in the same foils starts a level further from yellow.

Do I need a toner after highlights on brown hair?

Yes on nearly every head, because a foil lifts to yellow and the toner is the blonde in the photo. A demi 8.1 with 8.2 on 10 vol turns that yellow cool or sandy. It can be skipped when the yellow is faint.

Asked while the foils process

Will the highlights turn orange?

Only if a foil comes out before it reaches yellow. A 5 lifts through red-orange and orange on its way to the yellow of an 8, and a foil rinsed at gold reads ginger against the brown around it. Give the foils their 45 to 60 minutes, open one to look rather than trusting the timer, and if orange is still showing, tone at the level the hair reached with a blue base in the bowl.

How long does the toner last after highlights?

Four to eight weeks, twelve to twenty shampoos, and the cool goes first. The lifted pieces drift back toward yellow as the demi washes out, while the brown between them stays put. A purple shampoo once a week slows the slide, and the refresh is the same toner at the bowl with no lightener, which most people book at about six weeks.

How often do the foils need redoing?

Six to ten weeks for a partial with fine, blended foils, and some stretch the underneath to twelve. The retouch lightens the regrowth only, with the already-blonde ends kicked out of the foil or given 10 vol with a bond builder, and the demi toner refreshed through everything. Fresh lightener laid in a straight thick line at the top of the foil is what bands a retouch, so it is feathered.