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Distarch Phosphate
AKA “Phosphated Distarch, Starch Phosphate”
Ingredient
Ingredient Facts
Distarch phosphate
AKA: Phosphated Distarch
Ingredient · Binding · EWG: 1
Synthetic
Clean
Starch, phosphoric acid ester (2:1)
CAS #
55963-33-2
Form
Powder
See origin →
Functions
Absorbent
Anticaking
Binding
Absorbs Excess Oil
Prevents Clumping
Holds Formula Together
Antioxidant Protection
Reduces Inflammation
Wound Healing
Holds ingredients together
Traditional Use
A modified starch created in the 20th century by chemically treating starch with phosphoric acid. Developed as a thickening and stabilizing agent for cosmetic formulations, replacing traditional starch-based thickeners.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Safety Assessment of Starch Phosphates as Used in Cosmetics
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
→
Distarch Phosphate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Distarch Phosphate Acetate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Sodium Hydroxypropyl Starch Phosphate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Distarch Phosphate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Hydroxypropyl Starch Phosphate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Sodium Hydroxypropyl Starch Phosphate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Safety Assessment of Starch Phosphates as Used in Cosmetics.
Johnson W Jr, Tucker R, Bergfeld WF, Belsito DV, Cohen DE et al.
International journal of toxicology, 2026
→
Safety Assessment of Starch Phosphates as Used in Cosmetics.
Johnson W Jr, Tucker R, Bergfeld WF, Belsito DV, Cohen DE et al.
International journal of toxicology, 2026
→
Safety Assessment of Starch Phosphates as Used in Cosmetics.
Johnson W Jr, Tucker R, Bergfeld WF, Belsito DV, Cohen DE et al.
International journal of toxicology, 2026
→
Safety Assessment of Starch Phosphates as Used in Cosmetics.
Johnson W Jr, Tucker R, Bergfeld WF, Belsito DV, Cohen DE et al.
International journal of toxicology, 2026
→
Verified Jun 2026
Data: CosIng · EWG · CIR