Zinc Stearate — powder, Global — MakeYourSkin

About this material

Zinc Stearate is a Metallic soap supplied by MakeYourSkin as a fine powder for professional cosmetic formulation. Used worldwide across mainstream cosmetic formulation, it is valued for binding, adhesion, slip.

What is Zinc Stearate?

Zinc Stearate is supplied under the INCI / technical name Zinc Stearate and carries CAS number 557-05-1.

It belongs to the Metallic soap group and is derived from stearic acid, zinc salt. The material reaches you as a fine powder. It is an established cosmetic raw material with mature supply and well-understood formulation behaviour.

Key Properties & Benefits

  • Binding
  • Adhesion
  • Slip
  • Supplied cosmetic grade with a Certificate of Analysis for every batch.

Uses & Applications

Zinc Stearate is used in pressed and loose powders, primers, foundations, dry shampoos, masks and mattifying products.

Typical applications from the catalogue record: Pressed powder, eyeshadow.

As a formulation essential it is specified by function rather than by claim, and the level is set by the performance the formula needs rather than by a marketing target.

Handling note: Weigh accurately and dissolve or disperse fully before the batch is judged — undissolved powder reads as grit in the finished product.

How to Use — Recommended Use Level

Typical use level No single published figure applies to every grade of this material. As a working rule, start water-phase actives at 0.5–2%, oil-phase actives at 1–5%, standardised or potent isolates at 0.05–0.5%, and supplier-diluted solutions at the percentage the technical data sheet specifies. Always confirm the exact level against the supplier TDS, your stability and compatibility testing, and the safety assessment for your finished product.
Recommended pH formulation-dependent
Addition phase As per the supplier technical data sheet
Solubility Water-dispersible rather than truly soluble. Sprinkle into vigorously stirred water or pre-wet in glycerin to avoid lumping.

No single published use level applies to every grade of this material, so the figure above is a general starting rule rather than a specification.

General rule: always begin at the lower end of the range, confirm the level against the supplier technical data sheet, and validate stability, pH, colour, odour and preservative efficacy on the finished formulation before scaling up.

Technical Specification

INCI / Technical Name Zinc Stearate
CAS Number 557-05-1
Ingredient Family Metallic soap
Primary Cosmetic Functions Binding; adhesion; slip
Typical Applications Pressed powder, eyeshadow
Source / Feedstock Stearic acid, zinc salt
Origin / Tradition Global
Typical Bulk Form Fine powder
Appearance White to off-white crystalline or amorphous powder (botanical grades may be coloured)
Solubility Water Dispersible
Market Status Established
Catalogue Range Extended Range
Storage Store in the original sealed container in a cool, dry place at 15–25 °C, away from direct sunlight and moisture. Re-seal immediately after weighing; many powders are hygroscopic.
Shelf Life 24–36 months from manufacture in unopened original packaging; see the Certificate of Analysis
Vendor MakeYourSkin
MYS Catalogue Code MYS-N00043

Technical Notes

Slightly better slip than magnesium stearate; watch dust during handling.

Regulatory Note

Sold as a cosmetic raw material for professional formulation. A published INCI name does not by itself authorise use: the buyer is responsible for confirming permitted status, maximum concentration, restrictions by product type, labelling and claim rules in every market the finished product is sold in. In India, cosmetics fall under the Drugs and Cosmetics Act 1940 and the Cosmetics Rules 2020 administered by CDSCO, with BIS standards (including IS 4707 Part 2) listing restricted substances. The EU applies Regulation (EC) No 1223/2009 and its Annexes; the United States applies the FD&C Act as amended by MoCRA; Korea, Japan and China operate their own positive lists and functional-cosmetic frameworks. Every finished product needs its own safety assessment.

Reference: Regulatory / scientific reference

Documentation Supplied

  • Certificate of Analysis (CoA) for the batch supplied
  • Safety Data Sheet (SDS / MSDS) in the current GHS format
  • Technical Data Sheet (TDS) with specification, solubility and handling guidance
  • INCI declaration and, where assigned, CAS / EINECS numbers
  • Non-GMO statement on request
  • Vegan / animal-origin declaration on request
  • Halal and Kosher certification on request where the supplier holds it
  • Heavy-metal and microbiological test data on request

Available Pack Sizes

Supplied in 50 g, 225 g, 1 Kg and 5 Kg packs. Bulk quantities above 5 Kg, and drum or sack quantities, are available on request — contact the MakeYourSkin sales desk for a quotation and lead time.

50 g Pilot batches and small production runs
225 g Pilot batches and indie production runs
1 Kg Regular production for small and mid-size brands
5 Kg Scaled production and contract manufacturing

Disclaimer & Caution in Use

For external cosmetic use in professionally formulated products only. This is a concentrated raw material, not a finished cosmetic, and it is not intended for undiluted application to skin, for ingestion, or for any medicinal purpose. Wear gloves and eye protection when handling, avoid raising dust with powders, and keep out of reach of children and pets. Always run a patch test on the finished formulation, and validate stability, compatibility, pH and preservative efficacy before sale. Information supplied is offered in good faith as formulation guidance and does not constitute a safety assessment, a regulatory approval or a medical claim.

Fine powder — avoid generating and inhaling dust. Use local exhaust ventilation or a suitable respirator when weighing, and wet the powder into the formulation phase rather than dry-blending in open air.

Specification

INCI NAMEZinc Stearate
CAS NUMBER557-05-1
FAMILYMetallic soap
ORIGINGlobal — Stearic acid, zinc salt
SUPPLY FORMFine powder
SOLUBILITYWater Dispersible — Water-dispersible rather than truly soluble. Sprinkle into vigorously stirred water or pre-wet in glycerin to avoid lumping.
TYPICAL USE LEVELNo single published figure applies to every grade of this material. As a working rule, start water-phase actives at 0.5–2%, oil-phase actives at 1–5%, standardised or potent isolates at 0.05–0.5%, and supplier-diluted solutions at the percentage the technical data sheet specifies. Always confirm the exact level against the supplier TDS, your stability and compatibility testing, and the safety assessment for your finished product.
pH RANGEformulation-dependent
ADD ATAs per the supplier technical data sheet
FUNCTIONSBinding; adhesion; slip
USED INPressed powder, eyeshadow
STORAGEStore in the original sealed container in a cool, dry place at 15–25 °C, away from direct sunlight and moisture. Re-seal immediately after weighing; many powders are hygroscopic.
PACK SIZES50 g to 5 Kg
LEAD TIME7–10 days
REGULATORYStandard cosmetic review

How to work with it

1 Check the phase before you weigh

The specification's Add at row is the one to read first. Water-phase materials added to a hot oil phase are the most common reason a batch separates.

2 Hold the pH inside the stated range

Measure the finished product, not the premix. Outside the range the activity drops away and, for some materials, the degradation route is what causes complaints.

3 Start at the bottom of the use level

Then work up through stability and compatibility testing. Higher is not better, and the destination market's limit may sit below your formulation ceiling.

Documents

No account needed
Allergen & Origin Declaration Issued per order Request

Documents for this material are issued on request and never gated behind an account — ask for the CoA, MSDS or TDS.