Mellows Marks
Formula audits, CPSR readiness, exposure checks, and account features are available on desktop.
Account
Login and account features are available on desktop. On mobile, you can search ingredients free, no account needed.
Know what's in your formula. Know it's compliant.
Mellows Marks helps you understand what's in your formula and whether it's ready for the UK and EU market. Mellows Marks is not a legal document. It is a preparation tool to help you get CPSR ready.
Search an Ingredient7,500+
Ingredients
UK & EU
Regulations
3 min
Per audit
How It Works
Enter your formula and get an instant score on every ingredient. Build your Product Dossier, check your exposure, and confirm stability — all before you ever touch a CPSR checklist. When it's ready, download your audit report and go.
Pricing
Subscribing and running full audits requires a desktop or iPad.
Second Video or Image
Feature 01
Know what's in your formula
Every ingredient is scored so you can see at a glance what's compliant, what's restricted, and what needs attention — before you submit for assessment.
Feature 02
Catch issues before your CPSR
Mellows Marks flags any ingredient where your percentage may exceed regulatory limits, so you can fix issues before they become expensive problems.
What Mellows Marks checks
—Banned and restricted ingredients under UK & EU law
—Concentration limits for each ingredient in your formula
—CPSR readiness, so you know what's missing before assessment
—Estimated exposure based on product type and usage
—Required labelling and warning statements
Ready to check an ingredient?
Search an IngredientSearch ingredients here, free, no account needed. For full formula audits, CPSR checklists, exposure calculators, and account features, use Mellows Marks on a desktop or iPad.
Mellows Marks
Know what's in your formula.
Know it's compliant.
Know it's compliant.
Mellows Marks helps you understand what's in your formula and whether it's ready for the UK and EU market. It is not a legal document — it's a preparation tool to help you get CPSR ready.
Try Mellows Marks7,500+ ingredients·UK & EU regulations·3 min to audit
How It Works
Enter your formula and get an instant score on every ingredient. Build your Product Dossier, check your exposure, and confirm stability — all before you ever touch a CPSR checklist. When it's ready, download your audit report and go.
Banned
Hydroquinone
CAS 123-31-9
FunctionSkin lightening
AnnexII — Prohibited
Prohibited under EU/UK cosmetics regulation. Linked to skin sensitisation at cosmetic-use concentrations.
Permitted
Niacinamide
CAS 98-92-0
FunctionSkin conditioning
Typical Usage2–20%
No Annex restriction. Widely used for brightening, barrier support, and sebum control.
Banned
Triclosan
CAS 3380-34-5
FunctionPreservative
AnnexV — Restricted
Banned in most leave-on products since 2017 over antimicrobial resistance concerns.
Permitted
Squalane
CAS 111-01-3
FunctionEmollient
Typical UsageNo cap
No Annex restriction. Plant-derived, stable, non-comedogenic lightweight oil substitute.
Banned
Lidocaine HCl
CAS 73-78-9
FunctionAnaesthetic
AnnexII — Prohibited
Prohibited as a cosmetic ingredient — classified as a medicinal substance, not a cosmetic active.
Permitted
Panthenol
CAS 81-13-0
FunctionHumectant
Typical Usage1–5%
No Annex restriction. Common soothing, moisture-binding ingredient across leave-on and rinse-off formats.
Banned
Hydroquinone
CAS 123-31-9
FunctionSkin lightening
AnnexII — Prohibited
Prohibited under EU/UK cosmetics regulation. Linked to skin sensitisation at cosmetic-use concentrations.
Permitted
Niacinamide
CAS 98-92-0
FunctionSkin conditioning
Typical Usage2–20%
No Annex restriction. Widely used for brightening, barrier support, and sebum control.
Banned
Triclosan
CAS 3380-34-5
FunctionPreservative
AnnexV — Restricted
Banned in most leave-on products since 2017 over antimicrobial resistance concerns.
Permitted
Squalane
CAS 111-01-3
FunctionEmollient
Typical UsageNo cap
No Annex restriction. Plant-derived, stable, non-comedogenic lightweight oil substitute.
Banned
Lidocaine HCl
CAS 73-78-9
FunctionAnaesthetic
AnnexII — Prohibited
Prohibited as a cosmetic ingredient — classified as a medicinal substance, not a cosmetic active.
Permitted
Panthenol
CAS 81-13-0
FunctionHumectant
Typical Usage1–5%
No Annex restriction. Common soothing, moisture-binding ingredient across leave-on and rinse-off formats.
Feature 01
Know what's in your formula
Every ingredient is scored so you can see at a glance what's compliant, what's restricted, and what needs attention — before you submit for assessment.
Feature 02
Catch issues before your CPSR
Mellows Marks flags any ingredient where your percentage may exceed regulatory limits, so you can fix issues before they become expensive problems.
Pricing
Pay per audit, or subscribe for ongoing access — whichever fits how often you're formulating.
Single
One-off
£9.99
Monthly· Popular
10 audits per month
£19.99 / mo
Annual
Save £91 vs monthly
£149 / yr
Ready to audit your formula?
Join indie beauty founders already using Mellows Marks to stay compliant across UK and EU markets.
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