Fragrance comparison

Hydra Science vs Diorella

Notes, accords, longevity, sillage, seasons and community ratings, side by side.

Updated 14 Nov 2026 1,963 ratings analysed

Hydra Science

Judith Williams

4.001 votes

Rank #66,471 WoodyFloral

Full profile Similar & dupes

25%scent match

Clearly different

3 wins

Diorella

Dior · 1972

4.101,962 votes

Rank #452 CitrusGreen

Full profile Similar & dupes

Quick verdict

Which one should you pick?

Diorella takes 3 of 3 categories.

Hydra Science
Choose it for a woody and floral character. Best in spring, daytime wear.
Diorella
Choose it for a citrus and green character. Wins on longevity, sillage & projection and fragranxe ranking. Best in spring.

Hydra Science0/3

Diorella3/3

Ratings & consensus: Not scored
Community sentiment: Not scored
Longevity: Diorella
Sillage & projection: Diorella
Value for money: Not scored
Versatility: Not scored
Note pyramid (duration): Not scored
Fragranxe ranking: Diorella

Head-to-head breakdown

Every category side by side, with the winner called out.

Fragrance

Hydra ScienceJudith Williams

DiorellaDior

Winner

Ratings & consensus

Average rating and ownership split

4.00/ 5 · 1 votes

Have 15%Had 0%Want 85%

4.10/ 5 · 1,962 votes

Have 56%Had 44%Want 0%

Category winnerNot enough dataRating weighted by vote count

Community sentiment

How voters split from love to hate

0%Love

100%Like

0%Ok

0%Dislike

0%Hate

1 vote · too few to score

47%Love

39%Like

3%Ok

11%Dislike

0%Hate

1,632 votes

Category winnerNot enough dataMost positive mix (25+ votes)

Longevity & sillage

0–100 community performance scores

⏱ Longevity40

〰 Sillage38

♥ Love / hate75

⏱ Longevity71

〰 Sillage64

♥ Love / hate80

Category winners

LongevityDiorella

SillageDiorella

Value for money

How fairly priced voters find it

¤ Price valueN/A

¤ Price value56

Category winnerNot enough dataBest value score

Main accords

Strength of each scent family · outlined = shared by both

woody100%

floral92%

musky84%

white floral77%

powdery69%

aromatic61%

citrus100%

green92%

aromatic84%

white floral77%

earthy69%

fresh spicy61%

Scent match25%Clearly different · both white floral and aromatic

Note pyramid (duration)

Top, heart and base, with how long each lasts when known · gold = shared

Top

CarnationReseda

Heart

TuberoseCyclamenHoneysuckleMoroccan RoseSea Notes

Base

White Cedar ExtractMusk

Top

Green NotesSicilian LemonBergamotBasilMelon

Heart

HoneysuckleMoroccan JasminePeachCarnationCyclamenRose

Base

OakmossVetiverPatchouliMusk

InformationalShared notesCarnation, Cyclamen, Honeysuckle and Musk. Note durations are not published for these fragrances, so this is not scored.

Seasons & time of day

Relative to each fragrance's best season

Spring100

Summer50

Fall50

Winter0

Day100

Night50

Spring100

Summer0

Fall0

Winter27

Day–

Night–

Category winnerNot enough dataMost year-round

Who wears it

Gender appeal votes

Not enough votes yet

Men1

Unisex36

Women63

InformationalProfile onlyAudience is not scored

Ranking & credits

Fragranxe overall rank, nose and launch

Overall rank#66,471

PerfumerNot listed

Launched—

Reviews0

Overall rank#452

PerfumerEdmond Roudnitska

Launched1972

Reviews244

Category winnerDiorellaHigher overall rank

In a nutshell

Description & review snapshot

Hydra Science is a floral aquatic fragrance that anchors traditional white flowers in a wash of sea notes. Launched in 2016, it centers on the pairing of tuberose and carnation, finished with a crisp white cedar base. This scent is well-suited for warm spring days when you want something clean and slightly powdery for…

Reviews →

Dior Diorella opens with a sparkling splash of cold Sicilian lemon, crisp bergamot rind, and crushed garden basil. Almost immediately, a juicy slice of ripe honeydew melon enters the mix, adding a watery sweetness that softens the tart green bite. As the fragrance warms on your skin, creamy Moroccan jasmine petals, sw…

Reviews →

InformationalRead bothTaste is personal

How we score: ratings blend public fragrance ratings with Fragranxe member votes; longevity, sillage, value and sentiment are community vote scores, and season bars are relative to each fragrance's strongest season. Categories with too little data are shown but not scored. The scent match weighs accord overlap (60%) and shared notes (40%). More in the FAQ.

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Common questions

Straight answers from the data above.

Which is better, Hydra Science or Diorella?

Diorella takes 3 of 3 categories. Hydra Science is rated 4.00/5 from 1 votes; Diorella is rated 4.10/5 from 1,962 votes. Choose Hydra Science for a woody and floral character. Best in spring, daytime wear. Choose Diorella for a citrus and green character. Wins on longevity, sillage & projection and fragranxe ranking. Best in spring.

Which lasts longer, Hydra Science or Diorella?

Diorella lasts longest (Diorella 71/100, Hydra Science 40/100), based on community performance votes.

Which projects more, Hydra Science or Diorella?

Diorella projects furthest (Diorella 64/100, Hydra Science 38/100), based on community performance votes.

Do Hydra Science and Diorella smell similar?

Clearly different: a 25% scent match on Fragranxe. Both share white floral and aromatic accords. Common notes include Carnation, Cyclamen, Honeysuckle and Musk.

Is Hydra Science or Diorella better for summer or winter?

Hydra Science suits daytime wear. Based on community season votes.

What are the notes in Hydra Science and Diorella?

Hydra Science has top notes of Carnation and Reseda, heart notes of Tuberose, Cyclamen, Honeysuckle and Moroccan Rose, a base of White Cedar Extract and Musk. Diorella has top notes of Green Notes, Sicilian Lemon, Bergamot and Basil, heart notes of Honeysuckle, Moroccan Jasmine, Peach and Carnation, a base of Oakmoss, Vetiver, Patchouli and Musk.