Calvin Klein CK One Summer 2021: released in 2021, aquatic, citrus and fruity, about 4h on skin, projection 6/10, sillage 2/10. The alternatives below are matched to that profile.
The closest Calvin Klein CK One Summer 2021 dupe we found is Calvin Klein CK All — 86% match, about $30 (estimate) versus about $35 for a 100 ml bottle.
The five closest scent matches — the best Calvin Klein CK One Summer 2021 dupes we found, ranked by opening & dry-down similarity:
| # | Alternative | Scent match | Est. price (100 ml) | Longevity vs Calvin Klein CK One Summer 2021 | Projection |
|---|---|---|---|---|---|
| 1 | Calvin Klein CK All | 86% | about $30 (−14%) | 5h vs 4h | 4/10 |
| 2 | Armaf Club de Nuit Sillage | 84% | about $25* (−29%) | 7h vs 4h | 8/10 |
| 3 | Adam Levine for Men | 80% | about $20 (−43%) | 5h vs 4h | 5/10 |
| 4 | Ferrari Scuderia Ferrari Light Essence Bright | 83% | about $25 (−29%) | 5h vs 4h | 6/10 |
| 5 | Zara 007 Feels Like Summer | 83% | about $20 (−43%) | 4h vs 4h | 6/10 |
Evokes the clean, watery, and citrus-forward character of Calvin Klein CK One Summer 2021 with a similarly refreshing, effortless profile.
It shares its citrus, aromatic and fruity accords with Calvin Klein CK One Summer 2021, lasts about 5h against 4h and carries 1,990 community ratings.
Shares a crisp citrus and metallic freshness reminiscent of Calvin Klein CK One Summer 2021, leaning slightly more aromatic and sharp.
It shares its citrus, woody and aromatic accords with Calvin Klein CK One Summer 2021, opens on Lemon too, lasts about 7h against 4h and carries 6,044 community ratings.
Captures a similar vibrant, aquatic fruitiness that recalls the refreshing atmosphere of Calvin Klein CK One Summer 2021.
It shares its fruity, aromatic and aquatic accords with Calvin Klein CK One Summer 2021, opens on Lemon too, lasts about 5h against 4h and carries 95 community ratings.
Delivers a bright, sunny blend of fresh fruit and watery accords in the same family as Calvin Klein CK One Summer 2021.
It shares its citrus, fruity and woody accords with Calvin Klein CK One Summer 2021, lasts about 4h against 4h and carries 54 community ratings.
Features a clean, woodsy, and aromatic freshness that sits comfortably alongside Calvin Klein CK One Summer 2021.
It shares its citrus, fruity and aromatic accords with Calvin Klein CK One Summer 2021, opens on Grapefruit too, lasts about 5h against 4h and carries 376 community ratings. It is listed as discontinued, so availability varies.
Adam Levine for Men, at about $20 for 100 ml (estimate) — around 45% less than Calvin Klein CK One Summer 2021.
Armaf Club de Nuit Sillage, at about 7h on skin, against about 4h for Calvin Klein CK One Summer 2021.
Calvin Klein CK All, at 86% overall scent match across the opening and the dry-down.
At 4 sprays a day — about 146 ml a year — Calvin Klein CK All saves you about $5 a year against Calvin Klein CK One Summer 2021. 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. Armaf Club de Nuit Sillage comes closest at 7.0h, so it needs one re-spray to cover the day.
Calvin Klein CK One Summer 2021 notes, performance and price
AltScent is also free on the App Store and Google Play.
Updated 2026-10-09.