7.0
ISS Score
D+ — Higher caution — limited data
↑ Higher = Safer
Environmental
(ESS)
(ESS)
—
Confidence
(CSS)
(CSS)
—
active · antioxidant
Retinol
Molecular Formula
C20H30O
Category
Vitamin
Bottom Line: Retinol is generally considered effective for skin improvement, though individual responses may vary based on formulation and concentration.
Quick Answer
✔ Generally Safe If:
- Used as directed in cosmetic formulations.
- Skin is not sensitive or reactive to retinoids.
- Concentration is appropriate for skin type.
⚠ Use with Awareness If:
- You have sensitive skin or conditions like eczema.
- Using other active ingredients like AHAs or BHAs.
- Pregnant or breastfeeding, consult a healthcare professional.
✕ Avoid If:
- You have a known allergy to retinoids.
- Experiencing severe skin irritation or redness.
- Using products that may cause excessive dryness.
Chemical Properties
| Property | Value |
|---|---|
| Molecular Formula | C20H30O |
| Solubility | soluble in organic solvents |
Common Use Cases
1 Categories
Safety by Route of Exposure
dermal
dermal
Risk Level: Low
Dermal application of retinol is generally considered safe for most individuals, though it may cause irritation in sensitive skin.
oral
oral
Risk Level: Insufficient Data
Oral intake of retinol should be approached with caution, as excessive intake can lead to toxicity.
inhalation
inhalation
Risk Level: Insufficient Data
Inhalation exposure to retinol is not well studied, and safety data is limited.
ocular
ocular
Risk Level: Insufficient Data
Ocular exposure to retinol is not recommended due to potential irritation and lack of safety data.
Who Should Use or Avoid
⚠ Higher Risk Groups
- Pregnant Individuals — Retinol is typically advised against during pregnancy due to potential risks.
- Infants and Children — Use of retinol in this population is generally not recommended.
✔ Well-Tolerated Groups
- General Adult Population — Generally well tolerated when used appropriately.
Population-Specific Safety Data
| Population | Risk Level | Considerations |
|---|---|---|
| General Adult Population | Low | Generally well tolerated in adults when used in appropriate concentrations. |
| Pregnant Individuals | High | Retinol is typically advised against during pregnancy due to potential risks. |
| Infants and Children | Very High | Use of retinol in this population is generally not recommended. |
Toxicology Data
0 Endpoints
Retinol has been studied for its effects on skin health, but individual responses can vary.
| Endpoint | Value | Test Method | Interpretation | Source |
|---|
Data Quality: All toxicology values are sourced from verified regulatory assessments (CIR, SCCS, ECHA REACH) following OECD test guidelines. Values are used to calculate the Ingredient Safety Score (ISS).
Scientific Evidence
Key Assessments
Retinol has been studied for its effects on skin health, but individual responses can vary.
- Effective for reducing signs of aging.
- May cause irritation in sensitive individuals.
- Long-term use may yield better results.
Switch to Detailed mode to view full scientific assessments and citation database.
Pending formal assessment
Report: No formal safety assessment identified
Year: 2026
Conclusion: This ingredient has not been formally assessed by major regulatory or scientific bodies based on available records.
Regulatory Status
Global
Regulatory restrictions apply in some jurisdictions. Max 0.3% retinol equivalent in face/hand products; 0.05% in body products Switch to Detailed mode for full regulatory breakdown.
European Union
European CommissionRESTRICTED - ANNEX III ENTRY 45
Max 0.3% retinol equivalent in face/hand products; 0.05% in body products
United States
FDAPERMITTED IN COSMETICS WITHOUT SPECIFIC LIMIT
No federal limit; some states may regulate
Frequently Asked Questions
Retinol is commonly used in skincare products for its potential benefits in improving skin texture and reducing signs of aging.
Yes, retinol can cause irritation, especially in individuals with sensitive skin. It's advisable to start with lower concentrations.
Retinol is generally advised against during pregnancy due to potential risks. It is recommended to consult a healthcare professional for guidance.
Version History
Audit Trail
| Version | Date | ISS Score | What Changed |
|---|---|---|---|
| 2023-10-01 | — |
⚠ Important Notice: This information is for educational purposes only and does not constitute medical, professional, or regulatory advice. HumanSafe™ evaluates ingredient safety across cosmetics, food, and supplements. Scores are exposure-route and context-specific. Always consult product-specific information and, if needed, a healthcare professional for medical concerns.