How to Remove Odors from Underwear: Tips That Work

Quick Answer

To remove odors from underwear, wash them promptly in cold water with a sports detergent or add a half-cup of white vinegar to the rinse cycle. For persistent smells, pre-soak in a baking soda solution, and consider switching to moisture-wicking, odor-resistant fabrics like those from SAXX.

Underwear odors are a common frustration. Even with regular washing, smells can linger due to bacteria and sweat trapped in fabrics. The good news is that you can effectively deodorize your underwear with a few simple techniques and the right care routine.

This guide walks you through practical steps to remove odors from underwear and prevent them from coming back. We'll also cover how choosing the right fabric can make a big difference in staying fresh throughout the day.

Why Underwear Retain Odors

Underwear sits close to your skin all day, absorbing sweat and oils. When bacteria break down these substances, they produce odors. Synthetic fabrics like polyester and nylon can trap these smells more than natural fibers, especially if not washed properly.

Moisture is a key factor. Damp environments allow bacteria to thrive. That's why fabrics with moisture-wicking properties, like those used in SAXX underwear, help reduce odor by keeping you drier. Understanding this helps you choose both washing methods and underwear that combat odor at the source.

• Sweat itself is odorless; it's the bacteria on your skin that cause the smell.
• Tight, non-breathable fabrics increase sweating and odor buildup.

Washing Techniques That Eliminate Odors

Start by washing your underwear after every wear. Use the hottest water safe for the fabric (check the label) to kill bacteria. A sports or activewear detergent is designed to break down sweat and oils more effectively than regular detergent.

Add a half-cup of white vinegar to the rinse cycle—it's a natural deodorizer and helps neutralize odors. Alternatively, baking soda can be added to the wash to boost cleaning power. Avoid fabric softeners as they can coat fibers and trap odors.

• If odors persist, pre-soak underwear in a solution of cold water and baking soda for 30 minutes before washing.
• Dry underwear thoroughly; lingering moisture can cause mildew and odors.

Pre-Treatment for Stubborn Smells

For particularly stubborn odors, pre-treat the garment. Mix a paste of baking soda and water, apply it to the affected areas, and let it sit for 15-20 minutes before washing. This helps lift deep-set smells.

Another effective method is soaking in a solution of one part white vinegar to four parts water for 30 minutes. This is especially useful for synthetic fabrics that tend to hold onto odors. Always rinse thoroughly afterward.

• Test any pre-treatment on a small area first to ensure it doesn't damage the fabric.
• Never mix vinegar and bleach, as this creates toxic fumes.

Choosing Odor-Resistant Underwear

Prevention is often easier than cure. Selecting underwear made from advanced fabrics can significantly reduce odor buildup. Look for features like moisture-wicking, breathability, and antimicrobial treatments.

SAXX offers several options designed with these technologies. For example, the SAXX FREE DropTemp® All Day Cooling line uses DropTemp® Cooling technology and breathable, moisture-wicking fabric to keep you dry and fresh. The Vibe Xtra Soft Comfort line incorporates Stop Drop Technology™ with wicking tech built into the pouch, which helps manage moisture where it matters most.

• When shopping, check for fabric blends that include modal, which is naturally breathable and absorbent.
• Consider having multiple pairs so you can rotate and let each pair air out between wears.

Step-by-Step Odor Removal Routine

1. Pre-soak in a vinegar solution: Mix one part white vinegar with four parts cold water in a basin. Submerge your underwear and let them soak for 30 minutes. Vinegar naturally neutralizes odors and breaks down residue. Checkpoint: If the smell is very strong, extend the soak to an hour. Always rinse thoroughly after soaking.
2. Wash with a sports detergent in warm water: Use a detergent formulated for activewear, which targets sweat and oils. Wash on a warm or hot cycle (check care label) to kill bacteria. Avoid fabric softeners. Checkpoint: If you notice lingering odors after washing, try adding a half-cup of baking soda to the wash cycle as a booster.
3. Dry thoroughly in the sun or on high heat: Sunlight has natural antibacterial properties, so line-drying in direct sun can help eliminate remaining odor. If using a dryer, choose a high-heat setting if the fabric allows. Checkpoint: Ensure underwear is completely dry before storing to prevent mildew and musty smells.

SAXX Underwear That Helps Fight Odor

• SAXX FREE DropTemp® All Day Cooling (3 Pack): The DropTemp All Day Cooling Boxer Brief is built with FreeForm SupportTM for natural, pouchless support and DropTemp® Cooling technology that keeps you cool and comfortable wherever the day takes you. Designed to beat the heat, this super-soft pair uses breathable, moisture-wicking fabric to keep you feeling fresh, dry, and distraction-free all day. Three-pair pack. The moisture-wicking fabric helps keep you dry, reducing the moisture that causes odor. The cooling technology also helps regulate temperature, so you sweat less throughout the day.
• Vibe Xtra Soft Comfort (3 Pack): Our best-selling pair just got a major upgrade. Vibe Xtra Soft Comfort with Stop Drop TechnologyTM includes our latest wicking tech innovation built into the BallPark Pouch®. Made with super-soft fabric, Vibe Xtra Soft Comfort features a fly and No-RideUp LegTM. Three-pair pack. The advanced wicking technology in the pouch area draws moisture away from the skin, keeping you drier and reducing odor-causing bacteria. The super-soft fabric also adds comfort for all-day wear.

Removing odors from underwear is a matter of consistent care and smart fabric choices. By following these washing and pre-treatment steps, you can keep your underwear fresh and extend their life. For a long-term solution, consider investing in moisture-wicking, odor-resistant underwear like those from SAXX to stay comfortable and confident all day.