Formulas, techniques, charts and free tools for professional colour — built for stylists and salon teams, not for hair inspiration boards.
This Academy is a collection of material that S2 co-founder & hairstylist Vika Bond has used for studying and furthering her knowledge about hair science: working colour formulas, application techniques, shade charts, colour theory, free calculators, and much more, written for those that are forever students in the hair colour business.
Everything here is organised so you can find answers that you are looking for! Formulas are written as answers first — the shade, the developer, the ratio, the processing time — the reasoning that lets you adapt these formulas can be found inside the Styleit.to app. Techniques explain the physical craft. Charts are built to sit on a second screen. Some tools can be used right here without an account.
If you are new to the industry, start with Consultations and supercharge your cosmetology learning experience with the help of S2. This website will keep growing until Vika decides to quit the business!
Agree on the shade on screen before you mix — fewer redo appointments, faster trust, and a formula the client has already approved.
Read more →Exact colour and developer amounts for any brand and ratio, scaled to the hair in the chair — free, no login.
Read more →Root touch-up, full-head, or foils — how much colour to mix so you stop wasting tubes.
Read more →Enter colour weight and ratio, get the developer weight in grams — no login, no signup.
Read more →Level, primary tone, secondary tone — and why brand suffix letters change everything.
Read more →What each volume can and cannot do, and why the standard rule breaks on resistant grey and lightened hair.
Read more →Freehand softness versus foil-flat consistency — and which one a growing-out client should book.
Read more →The level system from black to platinum, with what each step actually looks like on a head.
Read more →Deposit or lift, and how much — the decision tree for developer on a root retouch.
Read more →Four directions are carrying the season, and all four share one theme: grow-out.
Read more →Violet for yellow, blue for orange — and the maintenance rhythm that keeps brass away.
Read more →Gold versus violet, and the reason ash over warm hair reads grey before it reads cool.
Read more →Opposites neutralise, neighbours reinforce — the single rule that explains every toner.
Read more →Built for grow-out: soft regrowth, freehand lift, and a toner that fades into the shade instead of out of it.
Read more →Convert level and tone separately, test on a strand, and never convert a corrective in one step.
Read more →Permanent, one level lighter than target, 20 volume, natural series at half — and why grey goes hot.
Read more →Same volume, different behaviour — why brand-matched developer removes an unknown.
Read more →Balayage on foil: cleaner lift than open-air painting, with a step sequence you can follow on the floor.
Read more →One is contrast on purpose, the other is brightness without an edge. Clients confuse them constantly.
Read more →Two sessions, not one: staged lift with lightener, then toning to the target shade.
Read more →Worth it on real lift, optional on deposit-only colour — and never a substitute for judgment.
Read more →The blend that hides a line of demarcation — and the timing rule that stops it going muddy.
Read more →