Fragrance Notes
CA Perfume
Opus
Inspired by Penhaligon's · 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
32 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 |
| 54464-57-2 | Tetramethyl Acetyloctahydronaphthalenes | Fragrance ingredient | 7.0B | Moderate |
| 3407-42-9 | 5,5,6-Trimethylbicyclohept-2-Ylcyclohexanol | Fragrance ingredient | 8.0A- | Low Risk |
| 34902-57-3 | Reaction Mass Of: (E)-Oxacyclohexadec-12-En-2- | Fragrance ingredient | 6.6Moderate | Moderate |
27 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 Opus 1870 safe for daily use?+
Opus 1870 carries a Grade B safety score, which generally supports daily wear for the general population. However, daily use depends on individual skin sensitivity. Those with reactive or sensitized skin should start with limited exposure and monitor for irritation. Discontinue use if redness, itching, or discomfort occurs.
Are there any ingredients I should watch out for?+
The formula contains two moderate-rated fragrance compounds at notable concentrations (25.0% and 12.5% combined), which are safe at these levels for most people but may trigger sensitivity in susceptible individuals. No single ingredient raises a major safety flag, but concentrated fragrance blends can occasionally cause contact dermatitis or respiratory sensitivity in vulnerable groups.
What does a PSS of 6.8/10 (Grade B) mean?+
The Product Safety Score (PSS) of 6.8/10 places Opus 1870 in Grade B, indicating above-average safety relative to similar fragrance products. This score reflects a balanced profile: most ingredients are well-characterized with acceptable ISS ratings, though some moderation exists. Grade B is a standard rating for eau de parfum products in this fragrance family.
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 | 7.3 | — | Current assessment — PSS v4.1 route-weighted engine. Dose-aware scoring at actual use concentration. |