You've made a perfume you love, but by lunchtime you can barely smell it. It's the most common complaint from new perfume makers, and it's usually fixable. A perfume lasts when it has the right strength and enough base notes to hold it on the skin. This guide explains why perfumes fade and how to use fixatives and base materials to make yours last longer.
Quick answer: Use 15–20% fragrance in your perfume. Make about 30% of your fragrance concentrate from base materials such as musks and ambery woods. Rest the perfume for at least 48–72 hours before judging it, and store it in a cool, dark place.
Why perfumes fade
A perfume is a mix of ingredients that evaporate at different speeds. Perfumers group them into three layers:
| Layer | Typical scents | How long they last |
|---|---|---|
| Top notes | Citrus, fresh, green, light fruits | Minutes to about an hour |
| Heart notes | Florals, spices, herbs | A few hours |
| Base notes | Woods, musks, amber, vanilla, resins | The longest, often many hours |
A fresh citrus or aquatic scent is mostly top notes, so it fades fast. Adding base notes gives the scent something to rest on as the lighter notes evaporate. Ingredients that do this job are often called fixatives.
Five ways to make your perfume last longer
- Use the right strength. A perfume with only 5% fragrance won't last like one with 20%. See the strength table in How to Make Perfume at Home.
- Add base materials. This makes the biggest difference. The table below shows what to use.
- Let it rest. A fresh blend smells sharp and thin. Rest it at least 48 hours (72 hours with Perfume Base), ideally 2–4 weeks.
- Choose your carrier. Perfume Base (Ready to Use) already contains fixatives. Plain Perfume Grade Alcohol doesn't, so adding base materials matters more.
- Store and wear it well. Keep bottles closed, away from heat and sunlight. Perfume usually lasts longer on moisturised skin, so try it after an unscented lotion.
Fixatives and base materials you can use
These materials are added to your fragrance concentrate (the fragrance part of the perfume, before you dilute it in alcohol or base). The ranges are starting points for experiments, not maximum limits. Check each material's IFRA limit before increasing it.
| Material | Smells like | Share of concentrate to start | What it adds |
|---|---|---|---|
| Musk T (ethylene brassylate) | Soft, sweet, clean musk | 1–10% | A smooth base that helps hold the blend together |
| Galaxolide 50 (HHCB, 50% in DPG) | Clean, sweet, floral musk | 5–15% | A long-lasting, "fresh laundry" softness |
| ISO E Super (OTNE) | Velvety woods and amber | 5–20% | Fullness and a soft woody glow. Many people can barely smell it alone, but it shows in a blend. |
| Ambifix Liquid | Warm, ambery | 5–15% | Warmth and depth in the dry-down |
| Cashmeran Liquid | Soft, musky, spicy woods | 1–5% | A cosy, powdery-woody base. Use a little; it's strong. |
| Hedione (methyl dihydrojasmonate) | Airy, fresh jasmine | 2–15% | Not a fixative, but it adds lift and radiance so the scent projects |
| Ethyl Vanillin Powder | Rich, sweet vanilla | 1–3% | Sweetness for gourmand scents. Dissolve it first; it can darken perfume over time. |
A booster recipe to try
This recipe makes one 50 ml bottle at 20% strength. All amounts are by weight. Use a scale that reads 0.01 g.
| Material | % of concentrate | Weight for a 50 ml bottle |
|---|---|---|
| Your fragrance oil | 70% | 5.60 g |
| ISO E Super | 10% | 0.80 g |
| Hedione | 10% | 0.80 g |
| Musk T | 5% | 0.40 g |
| Ambifix Liquid | 5% | 0.40 g |
| Fragrance concentrate | 100% | 8.00 g |
| Perfume Grade Alcohol | 32.00 g | |
| Total | 40.00 g |
- Weigh the fragrance oil and each booster into a clean glass beaker, taring the scale after each one.
- Add the Perfume Grade Alcohol and stir or shake well.
- Rest in a closed container in a cool, dark place for at least 48 hours, then bottle it.
In the finished perfume this gives 14% fragrance oil and 1–2% of each booster. Check that your fragrance oil and each booster are within their IFRA limits at these levels.
Which boosters suit which scent?
| Scent style | Try |
|---|---|
| Fresh and aquatic | Hedione and Ambifix Liquid |
| Citrus | Hedione, Galaxolide 50 and Musk T |
| Floral | Hedione and Galaxolide 50 |
| Woody and oud | ISO E Super, Ambifix Liquid and Musk T |
| Sweet and gourmand | Musk T with a little Ethyl Vanillin |
Keep the total concentrate the same when you swap boosters, so the strength of your perfume doesn't change.
Test it: with and without boosters
The best way to learn is a side-by-side test. Make two small vials of the same scent at the same strength: one with fragrance oil only, one with the booster recipe above. Rest both, spray each on a smelling strip, and smell them after 1 hour, 4 hours and the next day. Our 2 ml tester vials are ideal for this.
Frequently asked questions
Will adding more fragrance oil make my perfume last longer?
Up to a point. Beyond about 20–25%, or beyond the oil's IFRA limit, you add strength without much more staying power. Adding base notes usually helps more.
Is dipropylene glycol (DPG) a fixative?
Not really. DPG is mainly a solvent and diluent. It helps dissolve materials but adds little longevity on its own.
Why can't I smell ISO E Super?
Many people find it very faint on its own. Its effect is clearer in a blend, where it adds fullness and smoothness.
Do fixatives change how my perfume smells?
Yes, a little, because each one has its own scent. Start with small amounts and compare against a vial without boosters.
Can I add boosters to Perfume Base?
Yes. Perfume Base already contains fixatives, so start at the low end of each range.
