By Olivia Hart

Spraying perfume on your sweater instead of your skin is winter's coziest fragrance trend, and it comes with professional instructions. Darryl Do, senior perfumer and manufacturer at Delbia Do Fragrances & Flavors, walked ELLE through the technique. His rules are few and strict.

The method matters for a practical reason. Do says sweater spraying helps people with allergic dermatitis who cannot apply perfume directly to skin. It also extends a wardrobe of scents into knitwear.

What does the perfumer say about technique?

Moderation, above all. "It's a great way to enjoy your favorite scent beyond the skin. Just don't drown it in perfume, especially if it is a light-colored fabric. The key is moderation," says Do. Overspraying pale fabrics risks stains and discoloration.

His application trick is simple. Turn the sweater inside out, spray it, then spray the outside once you have put it on. For dosing, start with two to three sprays, let it dry down, and add more only if the scent fades or fails to project.

Which notes actually last on wool?

Do gives a clear hierarchy. Woody notes, musks, and patchouli-based scents have excellent longevity on fabric. "That said, you have to adjust the amount you spray to get the balance right because these scents can become overpowering when applied too heavily," says Do.

Fabric changes the equation. "Absolutely. Different fabrics absorb and retain fragrance differently, which can influence both how long a scent lasts and how it develops over time," Do explains. Natural fibers such as wool and cotton hold fragrance well. Polyester blends retain certain scent molecules differently. Wool also carries its own natural odor, which can drown lighter compositions.

His verdict on families: heavier woody, musky, amber, and oriental-style scents last longest. Citrus and light florals evaporate quickly and get lost in the wool. Sandalwood, cedarwood, amber, musk, and patchouli are Do's picks for the colder months.

Which fragrances fit the trend?

ELLE's roundup includes several named launches built for the season:

• Creed Iris Debonair — a fougère floral with bergamot, absinthe, English lavender, French iris pallida, and amberwood. The scent reads like sweet lavender and herbs sprayed on a buttery leather jacket.
• Prada Paradoxe Sweet Chemistry — an eau de parfum with blackcurrant syrup, neroli milk, and orange blossom absolute at the heart. It sits mid-scale on intensity.
• YSL Libre Santal — takes the long-wearing Libre formula and adds Caledonian sandalwood, turning a classic floral into a warm floral.
• Byredo Havana Tonka — a concentrated extrait, built for longevity, blending tobacco leaf, bergamot, rum, pink peppercorn, and crème brûlée.
• Unmute — an amber woody vanilla with black plum, Ceylon cinnamon, pistachio, Spanish ciste, Somali incense, and Madagascar vanilla.
• Eauso Vert — a deliberately non-gourmand take on vanilla, pairing cardamom and upcycled turmeric root with creamy sandalwood.
• Iggywoo — a skin scent of vanilla milk musk, toasted coconut, and cashmeran wood, designed to sit close like a favorite jumper.

The list also includes an amber floral hybrid of neroli, yuzu, jasmine sambac, tonka bean, and amber for anyone not ready to quit citrus; a powdery sweet gourmand of marshmallow, cotton candy, and sugared almond; a caramelized gourmand led by suede and vetiver; a floral musk EDP descended from a cult body mist; and another creamy take on vanilla.

What does this mean for the season?

Fragrance selection has shifted from strict seasonal rules to mood-based buying, Do notes, but fabric chemistry still rewards heavier compositions in winter. The sweater-spritz trend gives sensitive-skin wearers and longevity seekers the same answer: pick a woody or musky base, respect the fabric, and stop at three sprays.