Isopropyl Cloprostenate (CAS 157283-66-4) is a cosmetic cosmetic ingredient functioning as Hair conditioning agent; eyelash/eyebrow growth stimulant; synthetic. Reported NOAEL =0.015 mg/kg bw/d in rat (SCCS_vision_codex); EU Regulation 1223/2009 status: permitted; 1 safety opinion reviewed (sccs). Industrial safety data is also available in the chemical safety database. Same-CAS public records also appear in industrial chemical safety data.
US NotesNot specifically prohibited under 21 CFR for cosmetics; however, pharmacological activity raises drug-cosmetic boundary questions
For full compliance data across multiple jurisdictions, use the
Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for Isopropyl Cloprostenate.
Calculate MoS for your specific formulation with the
MoS Calculator.
Toxicological Studies
8 study endpoints found for Isopropyl Cloprostenate. NOAEL (No Observed Adverse Effect Level) values are used to calculate the Margin of Safety per SCCS methodology.
Endpoint
Value
Route
Species
Study Type
Source
NOAEL
=0.015 mg/kg bw/d
dermal
rat
dermal absorption
SCCS_vision_codex
NOAEL
=0.015 mg/kg bw/d
dermal
rat
dermal absorption
SCCS_vision_codex
NOAEL
=0.015 mg/kg bw/d
dermal
rat
dermal absorption
SCCS_vision_codex
NOAEL
=0.015 mg/kg bw/d
dermal
rat
dermal absorption
SCCS_vision_codex
NOAEL
=0.1 mg/kg bw/day
oral
rat
reproductive toxicity
SCCS_vision_codex
NOAEL
=0.1 mg/kg bw/day
oral
rat
reproductive toxicity
SCCS_vision_codex
NOAEL
=0.1 mg/kg bw/day
oral
rat
reproductive toxicity
SCCS_vision_codex
NOAEL
=0.1 mg/kg bw/day
oral
rat
reproductive toxicity
SCCS_vision_codex
Safety Opinions
Official safety assessments from the Scientific Committee on Consumer Safety (SCCS) and Cosmetic Ingredient Review (CIR).
sccsSCCS/1635/213 February 2022
Verdict: unknown
Function Categories & List Membership
Cosmetic/Chemical Function Categories
Softener and conditioner
Expert Verdict
Expert safety assessment and concern-level summary for Isopropyl Cloprostenate.
Public NOAEL study rows linked to Isopropyl Cloprostenate by CAS number or substance name.
Studies
8
Lowest NOAEL
0.015
Highest NOAEL
0.1
Units vary across source rows: mg/kg bw/d, mg/kg bw/day
SCCS_vision_codex
Chemical Function
Softener and conditioner
Frequently Asked Questions
Is Isopropyl Cloprostenate safe in cosmetics?
Isopropyl Cloprostenate has a safety rating of "POOR" in our database. EU status: permitted. US status: restricted. 8 toxicological study endpoint(s) are available in our database. This ingredient has been reviewed by sccs.
Is Isopropyl Cloprostenate allowed in the EU?
Isopropyl Cloprostenate EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.
What does Isopropyl Cloprostenate do in cosmetics?
Isopropyl Cloprostenate functions as: Hair conditioning agent; eyelash/eyebrow growth stimulant; synthetic prostaglandin F2α analog. It is classified as a cosmetic ingredient in our database. CAS number: 157283-66-4.
What is the NOAEL for Isopropyl Cloprostenate?
The NOAEL (No Observed Adverse Effect Level) for Isopropyl Cloprostenate is =0.015 mg/kg bw/d based on a dermal absorption study via dermal route in rat. A total of 8 study endpoints are available. Source: SCCS_vision_codex.
Is Isopropyl Cloprostenate used outside cosmetics?
Isopropyl Cloprostenate also appears in industrial chemical safety data. The cross-vertical cards on this page render same-CAS public rows from the matched databases.
Compliance Tools
Check Isopropyl Cloprostenate compliance across multiple jurisdictions:
Scan any product label with Piro — our free ingredient scanner. Point your camera at the ingredients list and get instant safety scores for every ingredient.