Skip to content
  • beauty
  • cleaning

Whey protein

CAS 91082-88-1

Concern score

Not assessed — no hazard data yet.

Whey protein in plain language

What it is

On cosmetic ingredient lists it appears as “Lactis serum proteinum”.

Also known as Lactis serum proteinum

What it does

Used in cosmetics as a skin-conditioning agent and a hair conditioner. Lactis Serum Proteinum is a polypeptide obtained from the fluid part of milk after separation from curds.

  • Skin conditioning
  • Hair conditioning
  • Conditioner
Is it a concern?
We haven't assessed a concern score for this ingredient yet. It is listed for cosmetic use in the EU.

Regulation

No restrictions found. Whey protein appears in these published regulatory listings.

Recorded in these product areas

  • Found in consumer products
  • Beauty
  • Cleaning
  • EUCosIngActiveLactis Serum Proteinum is a polypeptide obtained from the fluid part of milk after separation from curds
    • Lactis Serum Proteinum is a polypeptide obtained from the fluid part of milk after separation from curdsSource →
  • USEPAcommercial use observedEPA CPDat observed this chemical in 24 composition records across product categories including Personal care. EPA CPDat classifies this chemical for functional uses including Softener and conditioner.
    • EPA CPDat observed this chemical in 24 composition records across product categories including Personal care. EPA CPDat classifies this chemical for functional uses including Softener and conditioner.Source →

Expert safety opinions

No expert opinion on file for Whey protein. These are the independent scientific bodies that assess ingredients like this one; we show an opinion only when a record we hold cites it.

  • SCCS

    EU Scientific Committee on Consumer Safety

    No SCCS opinion on file.

  • CIR

    Cosmetic Ingredient Review (US expert panel)

    No CIR safety assessment on file.

Evidence & sources

No graded research studies for Whey protein yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.

3 data sources

Where this comes from

  • CosIng

    regulatory · updated 2026-09-23

    Open →
  • EPA Chemical and Products Database

    exposure · updated November 2014

    Open →
  • EPA DSSTox Identifiers

    chemistry · updated 2025-12-29

    Open →

Allergen profile

Canonical allergen markers detected on this ingredient. Each row is derived from the ingredient’s name or synonyms matching a known allergen class — useful when scanning a label for a specific allergy context.

  • DairyContains · Oral (ingested)

    Source: chemindex_name_match

Suitability

Context-specific fit derived from published classifications and the current ingredient evidence profile.

Fragrance avoidance

Nothing to weigh for this context yet.

No signal in this context

We have no published hazard signal for this ingredient, so we cannot say how it behaves in this context — that is missing evidence, not a clean result.

Where it has been recorded

How often EPA CPDat has listed Whey protein in a product composition. These are source records, not Greenveil catalog products.

Source records

24

Named organisations

6

Personal care

Typical roles

Skin conditioningHair conditioningConditioner
See products using Whey protein →

Catalog

Found in these products

Their ingredient lists include Whey protein; each product's own rating depends on its whole formula, so it is shown on the product page, not here.

Co-occurrence

Often appears with

Ingredients that frequently appear alongside Whey protein in the catalog.