Robson Peluquero Master Mechas
Professional use only
Master Mechas OX 20 · 900 ml
Professional OX 20 developer for use with compatible colour or lightening products. It is the oxidising component, not a stand-alone hair treatment.
When the base-product protocol specifies OX 20
- What it does
- Light lightening and permanent colour
- Where it fits
- When the base-product protocol specifies OX 20
- In this pack
- 1 × 900 ml developer; powder not included
Master Mechas OX 20 · 900 ml
What this presentation contains
One 900 ml bottle of Master Mechas OX 20. This individual product does not include bleaching powder or a colour product.
01 / Understand the product
What it does
The role of the powder, the developer and the selected presentation.
The developer participates in the colour or lightening service with a compatible base product. Its strength is a technical characteristic, not a rating of quality or a guaranteed number of levels. The emulsion format is intended for professional preparation; the product you combine it with determines the ratio and processing instructions.
When to use
Use the OX reference below to understand how the brand distinguishes the range. Selection still belongs to the professional service: identify the base product, intended technique, starting colour and previous chemical work before confirming the required strength.
The brand's guide associates OX 20 with light lightening and permanent colour. This does not establish a fixed number of levels.
Understand before choosing
Open the topic that answers your question. The essential purpose stays visible above.
OX strength, percentage and bottle size
OX 10/20/30/40 and their documented peroxide percentages describe the developer. The 900 ml label describes the amount in the bottle. Neither tells you the mixing ratio, application amount or number of levels that a particular service will achieve.
The base product sets the mixing instructions
A compatible bleaching powder or colour product specifies which developer and ratio it requires. An instruction for one base product cannot be reused for another simply because both use an OX developer.
The same developer does not mean the same service
A developer may appear in more than one professional context. The colour or lightening product, technique and hair history define the service. The comparison is therefore a reference, not a selector based only on the blonde someone wants.
Why a strand assessment matters
The professional assesses the actual hair and its chemical history rather than choosing solely from a shade photograph or strength number. Follow the tests required by the exact products; the comparison does not replace them or establish that fragile hair is suitable.
Understand the OX strengths
Reference information from the brand's consolidated guide. It explains the range; it does not select a developer for your hair or service.
- OX 05Confirmation pending
Hydrogen peroxide
Specific indication not confirmed in the consolidated guide. Use only when the exact base-product protocol identifies OX 05.
About this developer - OX 103%
Hydrogen peroxide
The brand's guide associates OX 10 with gentle toning and colour adjustments, only in compatible systems that specify this strength.
About this developer - OX 206%
Hydrogen peroxide
The brand's guide associates OX 20 with light lightening and permanent colour. This does not establish a fixed number of levels.
Developer identified in this presentation
About this developer - OX 309%
Hydrogen peroxide
The brand's guide describes medium lightening and coverage on resistant hair. The word resistant does not replace assessment or establish a universal hair category.
About this developer - OX 4012%
Hydrogen peroxide
The brand's guide describes more intensive lightening. A higher strength is not automatically a better or suitable choice for a particular head of hair.
About this developer
The service, compatible base product, chemical history and required tests govern selection. Do not mix strengths or substitute one for another from this comparison.
02 / Master Mechas
Use guidance
When the base-product protocol specifies OX 20
Professional use. Follow the current labels and required tests. Do not use on an irritated or injured scalp or on eyelashes and eyebrows. Wear suitable gloves and avoid contact with eyes.
What the professional needs to establish
This is a preparation guide, not a complete mixing or processing recipe. The selected products' current labels determine the ratio, application conditions and processing limits.
Hair and objective
Identify the starting colour, target service, chemical history and present condition. Complete the sensitivity and strand checks required by the product instructions.
Products and preparation
Check the exact powder and developer, their labels and the specified ratio. Use suitable gloves and a non-metallic mixing container.
Monitoring and finishing
Plan monitoring, stopping criteria, rinsing and subsequent care from the service instructions. Do not extend processing merely because the desired colour has not been reached.
About the technical information
Identity and pack contents were checked against the European catalogue. Roles, warnings and the OX comparison follow the consolidated technical dossier, pages 47–52 and 79. Current lot labels take precedence. This page does not claim that the full protocol has been reconciled.
Pack size is not the application amount or the number of services. The current base-product instructions determine the mixture and processing conditions; no universal dose or repeat interval is supplied here.
03 / Powder, developer and kit
Different roles. A clearly identified set.
The powder and the specified developer are components of the lightening preparation. A kit contains them; it is not a third application.
Lightening powder

Master Mechas · Bleaching powder · 500 g
Explore productSpecified developer

Master Mechas OX 20 · 900 ml
You are viewing this product
Both components in one set

Master Mechas + OX 20 · Kit · 500 g + 900 ml
Explore productThese links explain individual components and the exact commercial set. They do not approve a formula for every hair type. Toning and post-lightening care are separate decisions, not automatically included products.
04 / Master Mechas
Your questions, answered
Open a question for guidance specific to this product.
Is this the individual product or the kit?
One 900 ml bottle of Master Mechas OX 20. This individual product does not include bleaching powder or a colour product.
What is the peroxide percentage for this OX?
The reference panel displays only the concentrations confirmed in the consolidated source. OX 05 remains unconfirmed here; a naming convention is not used to fill that gap.
Can developer be used alone as a treatment?
No. The documented role is in combination with a compatible product that specifies the developer. It is not a restorative mask or a stand-alone hair-care step.
Is the full ingredient list confirmed?
Hydrogen peroxide is identified in the source, but that is not the complete cosmetic ingredient list. Consult the current label of the exact presentation for the full composition.
Is this for home use?
This lightening/developer range is for professional use. It is not a Home Care cleansing or conditioning routine.
Can the page choose an OX strength for me?
No. The professional must consider the compatible base product, technique, starting colour, chemical history and required tests. The comparison explains the range without prescribing a strength.
What mixing ratio and processing time should I use?
Follow the current labels and service protocol. The powder sources retain a ratio discrepancy and no universal time is established here. Neither a pack-size calculation nor a desired number of levels resolves those points.
Can I combine different developer strengths?
The consolidated guidance does not authorise mixing OX strengths or substituting one for another without a specific protocol. A comparison between products is not a mixing formula.
What should be checked before application?
Check the product identities, current labels, chemical history and required sensitivity/strand tests. Use suitable gloves and a non-metallic container. Do not apply to an irritated or injured scalp, eyelashes or eyebrows; avoid eyes.
Robson Peluquero Europe
Where to buy
Master Mechas OX 20 · 900 ml
One 900 ml bottle of Master Mechas OX 20. This individual product does not include bleaching powder or a colour product.
Where to buy
Confirm price, delivery and availability in the Official Store.
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