Question 1

What's the difference between c 4 – Oud Osmanthus and Black Opium?

Accepted Answer

c 4 – Oud Osmanthus is a feminine fragrance (marketed to women, though wearable by all) from Unika (2025) dominated by Fruity accords. Black Opium is a feminine fragrance (marketed to women, though wearable by all) from Yves Saint Laurent (2014) leaning on Vanilla accords. They share 2 accords: Fruity, Sweet.

Question 2

Which is better, c 4 – Oud Osmanthus or Black Opium?

Accepted Answer

By community rating, c 4 – Oud Osmanthus scores 4.65/5 vs Black Opium at 3.94/5. Black Opium's standout strength: Versatile statement fragrance choice mentioned in community recommendations. The "better" choice depends on what you value — longevity, projection, season fit, or signature character.

Question 3

Do c 4 – Oud Osmanthus and Black Opium smell similar?

Accepted Answer

They share 2 notes and 2 accords, including Fruity, Sweet, Patchouli, Vanilla. Black Opium: Black Opium by YSL is recognized by the r/fragrance community as a popular statement fragrance choice, particularly mentioned as an example of a bold evening scent.

Question 4

Which lasts longer, c 4 – Oud Osmanthus or Black Opium?

Accepted Answer

Black Opium: Strong sillage and projection appreciated by wearers Longevity varies by skin chemistry, concentration, and application method.

Question 5

Which season suits c 4 – Oud Osmanthus vs Black Opium?

Accepted Answer

c 4 – Oud Osmanthus scores highest for winter wear; Black Opium scores highest for winter wear. c 4 – Oud Osmanthus leans evening, Black Opium leans evening.

c 4 – Oud Osmanthus vs Black Opium

Comparison Summary

Shared Notes (2)

Unique to c 4 – Oud Osmanthus (7)

Unique to Black Opium (9)

Shared Accords (2)

Frequently asked questions

Community Sentiment Pulse — Black Opium

Positive

Negative

Attribute	c 4 – Oud Osmanthus	Black Opium
Brand	Unika	Yves Saint Laurent
Year	2025	2014
Rating	4.65	3.94
Concentration	—	—
Gender	feminine	feminine
Total Notes	9	11