Chaos Fragrances / Head to head
Initio Side Effect vs. Rehab
Which should you buy?
Choose Side Effect if rum, vanilla and warm spice draw you in. Choose Rehab if you prefer lavender, bergamot and woods. Our starting pick is Side Effect for a dedicated evening bottle, or Rehab for an aromatic fragrance to fit into your everyday rotation. The featured Jomashop bottles both contain 90 ml.
For a first Initio purchase, start with the role you want the bottle to fill. We would sample Rehab first for regular wear and Side Effect first for nights out. If you already own an everyday favorite, Side Effect may answer a different need; if most of your wearing happens during the day, put Rehab at the top of your shortlist.
Find your pickInitio Side Effect Eau de Parfum versus Rehab Extrait de Parfum. Both featured Jomashop listings are standard 90 ml / 3.0 oz sprays. Smaller sizes, samples and testers are separate offers.
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An evening favorite, or an everyday signature?
The better bottle is the one that fits your taste. Here’s where we’d start.
Side Effect
- You want a dedicated evening bottle
- Rum and warm spice appeal to you
- You already have an everyday favorite
Rehab
- You want an everyday rotation option
- You prefer an aromatic woody direction
- You are choosing your first Initio bottle
The differences that matter.
Our editorial comparison of character, wearability and the buying decision.
| The detail | Side Effect | Rehab |
|---|---|---|
| Our starting recommendation | For a dedicated evening fragrance | For an everyday rotation option |
| Selected scent cues | Rum, vanilla and warm spice | Lavender, bergamot and woods |
| The buying question | Will you reach for a night-out bottle? | Will this become a regular favorite? |
| Concentration | Eau de Parfum | Extrait de Parfum |
| Featured listing size | 90 ml / 3.0 oz standard spray | 90 ml / 3.0 oz standard spray |
| Featured retailer | Jomashop | Jomashop |
Rum and warm spice, or lavender and woods?
Initio describes Side Effect through tobacco, rum, vanilla and cinnamon. Rehab takes an aromatic direction, pairing bergamot and lavender with woods and musk. Our buying recommendation follows that contrast: start with the profile you enjoy, then decide how it fits the occasions you actually dress for.
Side Effect
Put Side Effect first when you want a fragrance reserved for dinner plans, nights out or a change of pace from your usual daily scent. We would shortlist it for someone who actively wants a rum-and-spice direction. The appeal is having a bottle you look forward to wearing when the occasion arrives.
The tradeoff An evening bottle makes sense only if you will use it. If you are buying your first expensive fragrance and need it to fit your regular routine, try it on an ordinary day as well as a special night. Rehab is our first sample when the brief is everyday wear.
Selected cues from Initio’s official Side Effect description; the brand also lists Hedione among its main notes. Brand sources ↓
Rehab
Put Rehab first when you want an aromatic fragrance you can picture reaching for across everyday plans. We would shortlist it for someone drawn to lavender and woods, from a relaxed weekend to a dinner reservation. Start here if you want one Initio bottle to become a familiar part of your rotation.
The tradeoff Versatility matters only when you enjoy the fragrance itself. If the attraction is specifically a rum-and-vanilla idea, sample Side Effect first. Rehab’s Extrait label also does not tell you whether you will prefer its scent or how it will behave in your routine.
Selected main notes from Initio’s official Rehab page. Hedione is also listed, and the description mentions black pepper. Brand sources ↓
Where will you wear it?
Use these as starting points. Your preferences and application matter most.
Dinner dates and nights out
Start with Side EffectSide Effect is our first sample for this brief. Try it for an evening you would normally spend out, then decide whether you enjoy wearing it throughout your plans. A special-occasion purchase works best when the occasion happens often enough to justify the bottle.
Everyday wear and weekends
Start with RehabWe would put Rehab first when you want one fragrance for repeated use. Test it during the routines you already have, including time indoors and outdoors. A bottle that becomes a regular favorite can offer more personal value than one bought for an imagined lifestyle.
Work and shared indoor spaces
Try Rehab with a light applicationRehab is our starting point for an aromatic preference, but a scent description cannot establish that a fragrance suits every workplace. Use a sample with a light application and consider the people sharing the room. Keep either fragrance for personal time if it does not fit that setting.
Adding to an existing collection
Choose the role you are missingIf you already have several everyday options, sample Side Effect as a possible evening addition. If your collection mostly serves special occasions, try Rehab during a normal week. Buy the one you would actually reach for, even if that means owning only one of the pair.
Does Rehab last longer than Side Effect?
Rehab is an Extrait de Parfum and Side Effect is an Eau de Parfum, but those labels alone do not establish a performance winner. Compare similar applications on separate days and notice both how long you detect the fragrance and how far it carries around you. If longevity is your deciding factor, a sample comparison in your own routine is more useful than assuming the Extrait must win.
Found your signature?
Buy Side Effect if you want an evening option and its rum-and-spice direction is the reason you are shopping. Buy Rehab if you want an aromatic woody fragrance for regular wear. We would start with Rehab for the everyday brief and Side Effect for the night-out brief. Once you have a favorite, compare the featured 90 ml offers below.
Side Effect
Rum. Vanilla. Spice.
Shop Side Effect Check price at JomashopShop Side Effect Eau de Parfum at Jomashop. The featured standard spray is 90 ml / 3.0 oz, item 3701415900073. Check the selected size and condition; 50 ml bottles, samples and testers are separate offers. Compare the final total after any coupon, shipping and tax.
See fragrance & retailer options →
Rehab
Lavender. Woods.
Shop Rehab Check price at JomashopShop Rehab Extrait de Parfum at Jomashop. The featured standard spray is 90 ml / 3.0 oz, item 3701415900035. Confirm Rehab, the concentration, size and condition on the listing. Samples and testers are separate offers; compare the delivered total before checkout.
See fragrance & retailer options →Compare the value. Both featured bottles contain 90 ml, so you can compare equal volumes. For cost per ml, divide each final total by 90 after accounting for any coupon, shipping and tax. Keep standard bottles separate from tester and sample offers. Then consider how often you expect to wear your choice: a lower price is helpful, but buying a fragrance you rarely use is poor value for your collection.
Still deciding?
Should I buy Initio Side Effect or Rehab?
Start with Side Effect for a dedicated evening bottle or Rehab for an everyday rotation option. Those are our editorial starting points. Try both in the settings where you expect to wear them, then buy the one you would reach for most often.
Do Side Effect and Rehab smell alike?
They are different compositions within Initio’s range. Side Effect is the starting point here for a rum-and-spice preference; Rehab is the starting point for an aromatic woody preference. Their shared brand does not make them interchangeable, and note lists alone cannot tell you which you will prefer.
Is Rehab an Eau de Parfum or an Extrait?
Initio identifies Rehab as Extrait de Parfum, and that is how the featured Jomashop listing identifies it. Side Effect is Eau de Parfum. Check the product title and details when shopping; the concentration labels alone do not guarantee a longevity or projection ranking.
Which would you choose for a first Initio fragrance?
We would start with Rehab if you want regular use from one bottle. If you already have a daily fragrance and want something for evenings, start with Side Effect. The right first purchase fills a role you care about and suits your own taste.
Are the featured bottles the same size?
Yes. Both Jomashop links feature standard 90 ml / 3.0 oz sprays. Compare the final totals on that equal-volume basis, checking the selected size and condition. Smaller bottles, samples and testers should be treated as separate offers.
Which Jomashop products do the shopping buttons feature?
Side Effect Eau de Parfum 90 ml, item 3701415900073, and Rehab Extrait de Parfum 90 ml, item 3701415900035. Confirm the exact fragrance, concentration, size and condition before checkout, along with any coupon terms and delivery details.
How this comparison was put together
Scent cues and concentrations follow Initio’s official product descriptions. Jomashop listing information identifies the featured bottle offers. Buying and occasion recommendations reflect our editorial interpretation of those scent directions.
We may earn a commission when you buy through shopping links on this page, at no extra cost to you. Prices and availability are subject to change.