The Manelli Scale Explained

May 16, 2026 Bleach Manelli Scale Education

The Manelli Scale Explained: How I Grade Every Bleach (And What the Numbers Really Mean)

The 100-point framework behind every bleach review on this site — and how to use it to make smarter product decisions for your clients and your salon.

By Mirella Manelli | Professional Hairstylist & Educator | 20+ Years Experience

Quick Answer The Manelli Scale is a 100-point bleach rating system. It scores lighteners across 10 categories (10 points each): dust, odor, viscosity, timing, swell, lift, integrity, neutralization, versatility, and price. A product scoring 90+ is exceptional across all conditions. Use the category scores — not just the total — to match a bleach to your specific techniques and clients.

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I Tested EVERY Hair Bleach Lightener at Cosmoprof to See Which Bleach is the BEST & HIGHEST LIFT

What Is the Manelli Scale?

The Manelli Scale is a standardized 100-point hair bleach evaluation system developed by Mirella Manelli, a professional hairstylist and educator with over 20 years of industry experience. It rates every lightener across exactly 10 categories, each scored from 1 to 10, for a maximum possible score of 100. The system was designed so professional stylists can compare bleaches objectively, independent of brand marketing or affiliate incentives.

The 10 Manelli Scale categories are:

#	Category	What It Measures
1	Dust	Airborne powder released during mixing
2	Odor	Smell intensity and quality during processing
3	Viscosity	Consistency and control during application
4	Timing	Predictability and grace window
5	Swell	Expansion of product on hair during processing
6	Lift	Levels achieved and evenness of lightening
7	Integrity	Hair condition after processing
8	Neutralization	Toner readiness and residual warmth
9	Versatility	Range of techniques and hair types it handles
10	Price	Value per use for a working salon

If you have ever landed on one of my bleach reviews and wondered, what exactly does a 7.8 out of 10 mean for viscosity — this post is for you.

I get questions about the Manelli Scale constantly. In comments, in DMs, from stylists at classes. And honestly, I love that you are asking, because it tells me you are the kind of professional who does not just want to know which bleach I recommend. You want to understand why.

That is exactly the spirit behind this system. So let me pull back the curtain completely.

Why I Built a Rating System in the First Place

After more than 20 years behind the chair and in the salon education space, I have tested more bleaches than I can count. And for most of that time, I did what everyone else does — I formed opinions based on feel, intuition, and client results. That is not a bad thing. Experience is irreplaceable.

But here is the problem I kept running into: when I would recommend a bleach to a fellow stylist or a student in one of my programs, they would come back with completely different results. Not because the bleach had changed. Because their situation had. Their water. Their developer brand. Their mixing ratios. Their processing environment.

I realized that “this is a great bleach” is almost a useless statement without context. Great for what? Great compared to what? Great according to whose standards?

So I built the Manelli Scale.

It started as notes I was keeping for myself — a structured way to evaluate each product I tested so I could look back and compare apples to apples. Ten categories. Ten points each. A hundred-point system that forces me to get specific rather than vague. Over time, it became the backbone of every review I publish. It is the reason I can tell you with confidence that one bleach scores a 9 on lift but only a 5 on integrity — and why that distinction matters enormously depending on your client’s starting level and hair history.

This is not a “best of” list built on brand relationships or affiliate incentives. It is a technical scorecard built by a working professional, tested in real conditions, with real hair.

The Ten Categories, Broken Down

Here is exactly what I am measuring — and what the numbers mean in practical terms for a working stylist.

1. Dust (1–10)

Score of 10

Virtually no airborne powder released during scooping or mixing.

Score of 1

Heavy cloud of particles — a respiratory and contamination risk.

Dust refers to how much airborne powder the bleach releases when you open the container and when you mix it. Beyond the obvious health considerations, heavy dust also signals inconsistent particle size in the powder itself, which can affect how evenly the bleach mixes and performs.

2. Odor (1–10)

Score of 10

Nearly undetectable or tolerable for a full highlight appointment.

Score of 1

Clears the salon — clients coughing, eyes watering.

I score based on both intensity and quality of the smell, because some bleaches have a sharp chemical bite that dissipates fast, while others have a lower-intensity odor that lingers for hours. For stylists who work in small spaces or with sensitive clients, this category carries real weight.

3. Viscosity (1–10)

Score of 10

Holds shape on the brush, sits on hair without migration, precise placement.

Score of 1

Runny, dripping, bleeds onto unintended sections.

Viscosity directly impacts your precision. If you are doing fine weaves or baby lights, you need a bleach that stays exactly where you put it.

4. Timing (1–10)

Score of 10

Reliable ~50-minute window, progressive lift, sections can be checked individually.

Score of 1

Too fast to manage, or stalls before reaching target lift.

Unpredictable timing is one of the top reasons stylists end up with uneven results. I score heavily here because consistency is everything.

5. Swell (1–10)

Score of 10

Product stays close to placement, clean controlled process.

Score of 1

Dramatic expansion — lifts off sections, spreads beyond foils.

For on-scalp applications especially, swell can be the difference between a clean result and a mess.

6. Lift (1–10)

Score of 10

Level 9+ on dark natural hair in one application, pale yellow or white tone at strand.

Score of 1

Minimal lift with heavy warmth and banding.

This is the one everyone wants to know about first — and I always remind stylists it is only one of ten for a reason. I test lift on consistent starting levels so the scores are comparable across products. Want to see the lift testing live? Watch me put 50+ bleaches through their paces at Cosmoprof: I Tested EVERY Hair Bleach Lightener at Cosmoprof →

7. Integrity (1–10)

Score of 10

Hair feels intact — pliable, smooth, elasticity still present after processing.

Score of 1

Excessive breakage, gummy texture, brittle strands.

Lift without integrity is damage. If you are working on clients with previously colored or compromised hair, integrity scores should be the first thing you look at after lift.

8. Neutralization (1–10)

Score of 10

Toner behaves predictably, no residual warmth undermining formula.

Score of 1

Stubborn underlying warmth that fights the toner even at correct lift level.

For stylists who do a lot of blonding work, this score is critical for predictable, repeatable results.

9. Versatility (1–10)

Score of 10

Works well on-scalp and off-scalp, foils and balayage, coarse and fine, virgin and previously processed.

Score of 1

One specific use case — performs poorly outside it.

High versatility matters if you want a go-to product that can handle your full client roster.

10. Price (1–10)

Score of 10

Exceptional quality at a price that makes financial sense per service.

Score of 1

Overpaying significantly, or cost-per-use is unsustainable.

Price is not about cheap versus expensive. It is about value — cost per ounce, product needed per service, and whether the performance justifies the price point. Your product costs directly affect your profitability. I do not ignore that.

Why 100 Points Instead of a Simple Ranking

A ranked list is satisfying to read. “Number one is best, buy that one.” I get the appeal.

But hair is not that simple, and neither are the professionals using these products. A bleach that ranks number one on my overall list might be completely wrong for your specific situation. Maybe it swells heavily and you do foil work on fine hair. Maybe it has a strong odor and you work in a small studio. Maybe it performs brilliantly but the cost-per-use kills your margins.

The Manelli Scale gives you a breakdown that is actually useful. You become the decision-maker — not me.

How to Use the Manelli Scale When Choosing a Bleach

Match your top priorities to the relevant category scores:

On-scalp color (roots, all-over): Prioritize Swell and Timing
Fragile or previously lightened hair: Go straight to Integrity and Neutralization
Fine weaves or baby lights: Lead with Viscosity
High-volume salon: Make Price and Versatility your anchors
Small or poorly ventilated space: Weight Odor and Dust heavily
Dark hair clients (Level 1–3): Start with Lift and Integrity together

Have a bleach you want me to score? Drop it in the comments below and I will add it to my testing list.

Try the Manelli Scale

Use the interactive tool below to browse every bleach I have rated — filter by technique, sort by category, and compare products side by side.

Frequently Asked Questions

What is the Manelli Scale?

The Manelli Scale is a 100-point hair bleach rating system created by Mirella Manelli. It evaluates professional lighteners across 10 categories — dust, odor, viscosity, timing, swell, lift, integrity, neutralization, versatility, and price — each scored 1 to 10.

Who created the Manelli Scale?

Mirella Manelli, a professional hairstylist and educator with over 20 years of experience. The system was developed from her independent product testing and is used across all bleach reviews on mirellamanelli.com.

What does a high Manelli Scale score mean?

A high total score (85–100) indicates a bleach performs well across all conditions. However, Mirella recommends focusing on the individual category scores that match your specific work — a 9 on lift paired with a 4 on integrity tells a very different story than a balanced 7 across both.

Is the Manelli Scale based on affiliate relationships?

No. All testing is conducted independently. Products are not paid placements, and scores are not influenced by brand relationships.

How many bleaches has Mirella Manelli tested?

Mirella has tested 50+ professional lighteners on standardized Level 2 hair swatches. Testing is conducted in real salon conditions, not controlled lab settings.

What category matters most on the Manelli Scale?

It depends on your work. For dark hair clients: Lift + Integrity. For on-scalp color: Swell + Timing. For fine hair techniques: Viscosity. For salon profitability: Price + Versatility.

Where can I find bleach reviews using the Manelli Scale?

All scored bleach reviews are published at mirellamanelli.com/blog.

Mirella Manelli is a professional hairstylist and educator with over 20 years of experience in the industry. All product testing is conducted independently. No brand sponsorships influence scoring.

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Hey, I'm Mirella

Hair Educator, Podcaster, YouTube Sensation, and Entrepreneur with over 20+ Years Experience

I help hairstylists, like YOU, simplify your skills and achieve your business goals. I have a ton of great resources on my website from blogs & podcast to online education, I’ve got you covered!