SIAM 1928 Sadayu: released in 2024, fresh spicy, green and amber, about 7h on skin, projection 7/10, sillage 5/10. The alternatives below are matched to that profile.
The closest SIAM 1928 Sadayu dupe we found is Guerlain Aqua Allegoria Herba Fresca — 87% match, about $75 (estimate) versus about $210 for a 100 ml bottle.
The five closest scent matches — the best SIAM 1928 Sadayu dupes we found, ranked by opening & dry-down similarity:
| # | Alternative | Scent match | Est. price (100 ml) | Longevity vs SIAM 1928 Sadayu | Projection |
|---|---|---|---|---|---|
| 1 | Guerlain Aqua Allegoria Herba Fresca | 87% | about $75 (−64%) | 4h vs 7h | 7/10 |
| 2 | Mad et Len No. XXI Spirituelle | 85% | about $210 | 5h vs 7h | 6/10 |
| 3 | Etat Libre d'Orange You Or Someone Like You | 85% | about $115 (−45%) | 5h vs 7h | 7/10 |
| 4 | Guerlain Aqua Allegoria Rosa Verde | 82% | about $100 (−52%) | 5h vs 7h | 7/10 |
| 5 | Xerjoff Uden Overdose | 81% | about $265 (+26%) | 7h vs 7h | 7/10 |
Shares the vibrant spearmint and fresh herbal character of Siam 1928 Sadayu, delivering an uplifting and aromatic experience.
It shares its green, aromatic and citrus accords with SIAM 1928 Sadayu, lasts about 4h against 7h and carries 6,545 community ratings.
Captures a similar bracing spearmint and herbal aromatic complexity reminiscent of Siam 1928 Sadayu.
It shares its aromatic, green and fresh accords with SIAM 1928 Sadayu, lasts about 5h against 7h and carries 188 community ratings.
Presents a similar mint-forward freshness and herbal green ambiance that echoes the refreshing spirit of Siam 1928 Sadayu.
It shares its green, aromatic and fresh spicy accords with SIAM 1928 Sadayu, opens on Bergamot too, lasts about 5h against 7h and carries 7,679 community ratings.
Explores a verdant, refreshing green space that aligns closely with the botanical atmosphere of Siam 1928 Sadayu.
It shares its green, aromatic and fresh spicy accords with SIAM 1928 Sadayu, opens on Bergamot too, lasts about 5h against 7h and carries 951 community ratings.
Leans into a comparable aromatic and amber-kissed territory, providing a rich yet fresh profile akin to Siam 1928 Sadayu.
It shares its citrus, fresh spicy and amber accords with SIAM 1928 Sadayu, opens on Bergamot too, lasts about 7h against 7h and carries 1,092 community ratings.
Guerlain Aqua Allegoria Herba Fresca, at about $75 for 100 ml (estimate) — around 65% less than SIAM 1928 Sadayu.
Xerjoff Uden Overdose, at about 7h on skin, against about 7h for SIAM 1928 Sadayu.
Guerlain Aqua Allegoria Herba Fresca, at 87% overall scent match across the opening and the dry-down.
At 4 sprays a day — about 146 ml a year — Guerlain Aqua Allegoria Herba Fresca saves you about $195 a year against SIAM 1928 Sadayu. Both priced at 100 ml; prices are estimates.
Across 2,358 originals, the median designer bottle is $120 and its closest match $30 — the Dupe Report 2026.
On an 8-hour day, none of the 5 last a full 8 hours. Xerjoff Uden Overdose comes closest at 6.9h, so it needs one re-spray to cover the day.
SIAM 1928 Sadayu notes, performance and price
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Updated 2026-10-29.