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Patch Test & Skin Safety

Skin tolerance, patch tests and how to support skin-related claims.

June 6, 2026
Patch Test & Skin Safety

What Is a Cosmetic Patch Test (and Is It Required)?

Cosmetic patch test explained: how a 48-hour patch test works, whether EU law requires it and which skin-tolerance claims it can support.

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June 1, 2026
Patch Test & Skin Safety

Dermatologically Tested Claim: How to Back It Up

A dermatologically tested claim needs supervised skin-compatibility evidence. See what regulators expect, which tests work and how to document it.

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May 27, 2026
Patch Test & Skin Safety

Patch Test Cost for Cosmetics and How Long It Takes

Patch test cost for cosmetics depends on design, products, panel and report. See what drives it and the timeline from sample pickup to signed report.

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October 14, 2025
Patch Test & Skin Safety

Repeat Insult Patch Test (HRIPT) Explained

Repeat insult patch test (HRIPT) explained: phases, panel size, what results mean and how it differs from a single patch test.

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October 9, 2025
Patch Test & Skin Safety

Hypoallergenic Claims: What the Law Says

Hypoallergenic claim cosmetics: what EU law and the authorities expect, what evidence you need and which wording to avoid.

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October 4, 2025
Patch Test & Skin Safety

“For Sensitive Skin” Claims: How to Substantiate

Sensitive skin claim cosmetics: what the law says, which evidence supports "for sensitive skin" and which wording to avoid.

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September 29, 2025
Patch Test & Skin Safety

How to Patch Test a New Skincare Product at Home

How to patch test skincare at home: where to apply, how long to wait, what a reaction looks like and what brands should say.

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February 11, 2025
Patch Test & Skin Safety

Patch Test Volunteers: How Many Are Needed?

Patch test volunteers number explained: why panel size matters, what a few dozen volunteers can and cannot show, and how to plan a skin compatibility study.

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February 6, 2025
Patch Test & Skin Safety

Cosmetic Irritation vs Allergy: How to Tell the Difference

Cosmetic irritation vs allergy: how the two skin reactions differ, what causes each, and how brands can reduce risk with formulation, testing and labelling.

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April 27, 2024
Patch Test & Skin Safety

Patch Test Results Explained: Irritation Scores and What They Mean

Patch test results for cosmetics explained: how irritation scores are graded, what a pass looks like and what to do when volunteers show a reaction.

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April 22, 2024
Patch Test & Skin Safety

Natural Ingredients and Skin Reactions: Why Natural Is Not Always Gentle

Natural cosmetics skin reaction: why plant ingredients can irritate or sensitise, which ones cause trouble and how to formulate, test and label safely.

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April 17, 2024
Patch Test & Skin Safety

Customer Skin Reaction Complaints: How Cosmetic Brands Should Respond

Cosmetic skin reaction complaint: a step-by-step way to reply, collect facts, assess causality, decide on reporting and fix the product.

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Edit a previous CPSR Safety Report or start a new one?

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Your CPSR Safety Report and everything you filled in are now in your cart. Go to checkout to complete the order, or carry on adding tests โ€” your answers stay with this item.

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1
Company
2
Product
3
Packaging
4
Formula
5
Tests
6
Artwork
7
Review

Complete the product form. Our safety assessors will confirm your order shortly.

I. Person / company ordering the safety assessment
II. Product information
III. Use conditions and packaging
IV. Product formula
#INCI nameCAS numberNano% in product
May contain
Total0/ 100%
V. Specifications and tests of the finished product

A challenge test is required for every cosmetic product except microbiologically low-risk ones, which are:

  • Products that do not contain water, or have low water activity
  • Products with a pH below 3 or above 10
  • Products containing more than 20% alcohol
  • Products containing raw materials that create a hostile environment (strong oxidising agents, polar organic solvents, oxidising dyes, aluminium chlorohydrate and related salts, propellant gases and so on)
  • Products filled into containers at more than 65 ยฐC
  • Products packaged in pressurised containers, pump dispensers or single-dose units
When is a challenge test not required?

A challenge test is required for every cosmetic product except microbiologically low-risk ones, which are:

  • Products that do not contain water, or have low water activity
  • Products with a pH below 3 or above 10
  • Products containing more than 20% alcohol
  • Products containing raw materials that create a hostile environment (strong oxidising agents, polar organic solvents, oxidising dyes, aluminium chlorohydrate and related salts, propellant gases and so on)
  • Products filled into containers at more than 65 ยฐC
  • Products packaged in pressurised containers, pump dispensers or single-dose units
VI. Product packaging and artworkOptional — we check the label against the finished CPSR, so the artwork for the outer packaging and the primary container helps. You can also send it to us later.
VII. Review your order
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Edit a previous Safety Data Sheet or start a new one?

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Your Safety Data Sheet and everything you filled in are now in your cart. Go to checkout to complete the order, or carry on adding tests โ€” your answers stay with this item.

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Order Safety Data Sheet
Draft restored
1
Client
2
Formula
3
Languages
4
Details
5
Review

Fill in the form below. We'll prepare your REACH-compliant SDS with a fast turnaround.

I. Information about the client
The client
Holder of the SDS
II. Information about the product formula
#INCI nameCAS number% in product
Total0/ 100%

Have a long ingredient list? Start from our spreadsheet.

Download the template, fill it in Excel, Numbers, LibreOffice or Google Sheets, then upload it here โ€” every field lands in the right place. Filling the form by hand works just as well.

Download template (.xlsx) or .csv
III. Regulatory area and language versionsAn SDS must be supplied in the official language of every market where the product is placed. Pick each market you distribute to — we issue one language version per selection.
0 selected
IV. Additional information about the productEverything in this step is optional, but the more you give us the faster we can finalise the SDS.
V. Review your order
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