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Dicalcium Phosphate Dihydrate
AKA “7757-93-9, CALCIUM HYDROGEN PHOSPHATE, Calcium phosphate dibasic, calcium hydrogenphosphate, Dicalcium phosphate, Dibasic calcium phosphate, Calcium phosphate, dibasic, secondary Calcium phosphate, Biofos, Phosphoric acid, calcium salt (1:1)”
Ingredient
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Ingredient Facts
Dicalcium phosphate dihydrate
AKA: 7757-93-9, CALCIUM HYDROGEN PHOSPHATE, Calcium phosphate dibasic, Calcium hydrogenphosphate, Dibasic calcium phosphate, Dibasic, Secondary Calcium phosphate, Biofos, Phosphoric acid, Calcium salt (1:1)
Ingredient · Abrasive · EWG: 1
Synthetic
Clean
Calcium hydrogenorthophosphate
Effective at 24.65%
Solubility Sparingly soluble in water. Insoluble in ethanol
Formula
CaHO4P
Mol. Weight
136.06
CAS #
7757-93-9, 7789-77-7
Form
Powder
State
Dry Powder, Pellets or Large Crystals; Pellets or Large Crystals; Other Solid; Dry Powder
See origin →
Functions
Abrasive
Opacifying
Oral Care
Physical Exfoliant
Adds Opacity
Antioxidant Protection
Reduces Inflammation
Brightens Skin
Gently polishes surface
Supports dental health
Creates creamy opacity
Traditional Use
The hydrated form of dicalcium phosphate developed for cosmetic and pharmaceutical use in the 20th century. Functions as a mineral bulking agent and mild abrasive, particularly in powder formulations.
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
Concentration Guide
0.3%
49.0%
0%69%
Effective Range
CIR reported use: 0.3-47.7 | 6.8-49
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
High Fidelity Brightening Concealer Stick
Exa Beauty
 →
Barely There Sheer Lipstick
Finding Ferdinand
 →
Clean Sheen Cheek + Lip Color
Gen See
 →
Cruise Liner Eye Pencil
Gen See
 →
Cruise Liner Lip Pencil
Gen See
 →
Mixed Media Must Haves
Gen See
 →
Pick Me Up Lip Matte Lipstick
Gen See
 →
Seriously Jelly 24 Hour Hydrating Lip Color
Gen See
 →
Straight Flush Glow Stick
Gen See
 →
Eye Stylus Shadow Stick
ILIA Beauty
 →
Lip Sketch Hydrating Crayon
ILIA Beauty
 →
Comfort Level Lip Mask
Credo Beauty
 →
Lip Shape Lip Liner - Biscuit
Westman Atelier
 →
Lip Shape Lip Liner - Coucou
Westman Atelier
 →
Lip Shape Lip Liner - Je Rêve
Westman Atelier
 →
Lip Shape Lip Liner - Lou Lou
Westman Atelier
 →
Lip Shape Lip Liner - Mink
Westman Atelier
 →
Lip Shape Lip Liner - Minou
Westman Atelier
 →
Lip Shape Lip Liner - Petal
Westman Atelier
 →
Lip Shape Lip Liner - Sable
Westman Atelier
 →
Lip Suede Matte Lipstick - Figue
Westman Atelier
 →
Lip Suede Matte Lipstick - Je Rêve
Westman Atelier
 →
Lip Suede Matte Lipstick - Läcker
Westman Atelier
 →
Lip Suede Matte Lipstick - Le Rouge
Westman Atelier
 →
Lip Suede Matte Lipstick - LFG
Westman Atelier
 →
Lip Suede Matte Lipstick - Lou Lou
Westman Atelier
 →
Lip Suede Matte Lipstick - Ma Biche
Westman Atelier
 →
Lip Suede Matte Lipstick - Mimi
Westman Atelier
 →
Lip Suede Matte Lipstick - Minx
Westman Atelier
 →
Lip Suede Matte Lipstick - Petal
Westman Atelier
 →
Lip Suede Matte Lipstick - Pinch
Westman Atelier
 →
Lip Suede Matte Lipstick - Pip
Westman Atelier
 →
Lip Suede Matte Lipstick - Piqué
Westman Atelier
 →
Lip Suede Matte Lipstick - Reine
Westman Atelier
 →
Lip Suede Matte Lipstick - Rose
Westman Atelier
 →
Lip Suede Matte Lipstick - Rue
Westman Atelier
 →
Lit Up Highlight Stick - Biscuit
Westman Atelier
 →
Lit Up Highlight Stick - Brûlée
Westman Atelier
 →
Lit Up Highlight Stick - Garçonne
Westman Atelier
 →
Lit Up Highlight Stick - Lit
Westman Atelier
 →
Lit Up Highlight Stick - Nectar
Westman Atelier
 →
Lit Up Highlight Stick - Pärla
Westman Atelier
 →
Lit Up Highlight Stick - Petal
Westman Atelier
 →
Vital Skin Foundation Stick - Atelier 0
Westman Atelier
 →
Safety Assessment of Phosphoric Acid and Its Salts as Used in Cosmetics
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
→
Calcium Phosphate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Dicalcium Phosphate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Dicalcium Phosphate Dihydrate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Metaphosphoric Acid
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Phosphoric Acid
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Tricalcium Phosphate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Calcium Phosphate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Dicalcium Phosphate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Dicalcium Phosphate Dihydrate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Phosphoric Acid
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Tricalcium Phosphate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Composite Aerogel Scaffolds Containing Flexible Silica Nanofiber and Tricalcium Phosphate Enable Skin Regeneration.
Wang X, Yuan Z, Shafiq M, Cai G, Lei Z et al.
ACS applied materials & interfaces, 2024
→
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR