Fragrance Notes
CA Perfume
Rare Molecules 02
Inspired by Escentric Molecules · Format: EDP Spray
Safe for everyday use. This product is suitable for most adults in normal fragrance application.
Why This Score
Scores are calculated by HumanSafe™ — an independent third-party platform — using peer-reviewed toxicology sources, regulatory databases, and HumanSafe's Mood Architecture™.
Safety at a Glance
✅ Safe for
- —Daily topical use
- —Most healthy adults
- —Long-term skin contact
- —EDP leave-on format
⚠ Use with care if
- —Sensitive or reactive skin
- —Direct eye-area contact
✕ Avoid if
- —Broken or compromised skin
- —Children under 3 years
Full breakdown available to members. Join free →
Key Factors
Score DriversIngredients
6 Total| CAS No. | INCI Name | FUNCTION | ISS | Status |
|---|---|---|---|---|
| 64-17-5 | Ethanol | Solvent / Carrier | 7.0Poor | Moderate |
| 7732-18-5 | Aqua | Solvent / Carrier | 10.0 | Low Risk |
| 139504-68-0 | 2-T-Butylcyclohexyloxybutanol | Fragrance ingredient | 7.0B | Moderate |
| 3738-00-9 | Naphtho[2,1-B]Furan, Dodecahydro-3a,6,6,9a- | Fragrance ingredient | 5.5Moderate | High Concern |
| 80-54-6 | Butylphenyl Methylpropional⚑ | Fragrance ingredient | 6.0C | Note 1 ⚑ |
1 more ingredients in this formulation
See Full Ingredient List — Join Free →Ingredients sourced from MG Safety Data Sheet and EU Allergen Certificate. Formulation: fragrance oil 20% + Ethanol 65% + Aqua 15%. ⚑ = EU regulated allergen (Regulation EC 1223/2009). Note 1 = Annex II prohibited substance. Note 2 = commercial quality (includes both isomers).
Fragrance Mood Profile
MEI™ Mood ArchitectureIndex™
MEI™ scores are calculated by HumanSafe™ using HumanSafe's Mood Architecture™ — a 9-dimension olfactory-emotion mapping system. MEI is an intensity scale: 3/10 = subtle, 9/10 = immersive. Score reflects mood character, not safety.
Usage & Safety Guidance
Safer Alternatives
Higher PSS ScoreProducts with higher Product Safety Scores. Independently assessed by HumanSafe™.
Frequently Asked Questions
Is Molecules 02 safe for daily use?+
For most adults, yes—the PSS Grade B rating indicates acceptable safety for cosmetic use. However, fragrance concentrations in eau de parfum formulas are higher than in lighter formats like eau de cologne, so daily application should be limited to normal amounts (typically 1–2 spritzes). Those with very sensitive skin or fragrance allergies should consult a dermatologist before daily use.
Are there any ingredients I should watch out for?+
The two tert-butylcyclohexyloxy alcohol compounds (making up over 13% of the product) are the main ingredients to monitor. While they carry grades A–B on the ingredient safety scale, they are synthetic compounds with limited published safety data for extended skin contact. Coumarin, the third major ingredient, is well-established and safe. If you have a history of fragrance sensitivity or contact dermatitis, patch test this product on a small area of skin first.
What does a PSS of 6.0/10 (Grade B) mean?+
The Product Safety Score (PSS) evaluates overall formulation safety based on ingredient concentrations and individual safety profiles. A Grade B score (6.0/10) indicates the product meets safety standards for cosmetic use but does not rank in the highest safety tier. It suggests acceptable use for general adult populations, with some caution recommended for sensitive groups. This is a common score for fragrance products containing synthetic actives.
The HumanSafe™ Difference
Most safety tools rate ingredients in isolation — one score regardless of concentration, context, or how the product is used. We assess at actual use concentration.
| Dimension | Other Apps (EWG, Yuka) | HumanSafe™ |
|---|---|---|
| Dose awareness | Same score regardless of concentration | Assessed at actual use concentration in this product |
| Exposure context | Same score for rinse-off and leave-on products | Adjusted for product format and absorption rate |
| Allergens | Binary flag — present or absent | Concentration compared to IFRA/EU safe limits |
| Purchase signal | Score only, no recommendation | Clear verdict + safer alternatives ranked by PSS |
Version & Audit Trail
| Version | Date | PSS Score | ISS (avg) | Change Summary |
|---|---|---|---|---|
| v2.1.0 | April 2026 | 7.4 | — | Current assessment — PSS v4.1 route-weighted engine. Dose-aware scoring at actual use concentration. |