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What are the precautions for daily cleaning of underwear?

2025-07-02

Classification and preprocessing

1. Strictly classify and clean

  • Material classification: Natural fibers such as pure cotton and modal are washed separately from synthetic fibers such as nylon and spandex to avoid pilling caused by friction between synthetic fibers.

  • Color classification: Separate dark colors (black, blue) from light colors (white, pink) to prevent staining (especially for new underwear that needs to be washed separately for the first time).

  • Internal and external separation: Underwear should be washed separately from outerwear and socks (socks are prone to carrying fungi, while outerwear comes into contact with more external bacteria).

2. Pre treated stains

  • Blood stains: Immediately soak underwear in cold water for 10 minutes after getting blood stained (hot water can make proteins coagulate and harder to wash), add a small amount of laundry detergent and gently rub.

  • Sweat stains/oil stains: If there are sweat stains on the edges of bra cups and underarm areas, you can first apply a clean coat with the collar and let it sit for 5 minutes before washing.


Hand washing is the main method, machine washing requires skills

✔  Recommended hand washing (for better clothing protection)

  • Water temperature control: Cold water or water below 30 ℃ (high temperature can damage the elasticity of the fabric, especially the spandex component is prone to aging when exposed to heat).

  • Detergent selection: Special underwear laundry detergent (pH neutral, containing antibacterial ingredients), avoid using laundry powder (strong alkalinity, easy to damage fabric fibers).

  • Correct scrubbing technique: Bra: Gently press the cup with your hands (do not twist or twist), focus on scrubbing the edges of the steel ring and the back buckle (which is prone to dirt accumulation), and use fingertips to scrub the shoulder straps to avoid pulling or deforming them. Underwear: Gently rub the crotch area back and forth with your hands (double layered fabric needs to be opened and washed), do not use a brush to scrub hard (it will damage the fibers).

  • Rinse thoroughly: rinse with clean water for at least 2-3 times until the water becomes clear without foam (residual detergent is easy to irritate the skin).

✖  Machine washing precautions (when absolutely necessary)

  • Use laundry bag: The bra needs to be fastened with a back button, the shoulder straps should be folded, and placed in a dedicated laundry bag (to prevent deformation of the steel ring and entanglement of the shoulder straps).

  • Select gentle mode: Set the washing machine to "wool wash" or "gentle mode" to avoid dehydration (direct spin drying can cause severe deformation of underwear).

  • Individual machine wash: Only wash underwear at a time, do not mix with other clothes (especially jeans, jackets, and other high friction clothes).


Avoid deformation and bacterial growth

★ Key points for air drying

  • Pure cotton underwear can be sun dried to kill bacteria, but modal and synthetic fabrics need to be sun dried (exposure to sunlight can accelerate fabric hardening and fading).

  • Bra drying method: Clamp the bottom edge of the cup with a clip and hang it upside down on a hanger (to avoid stretching due to the weight of the shoulder straps).

  • Underwear drying method: Clamp the elastic band around the waist and dry it on the front side (drying it on the back side can easily contaminate dust and bacteria in the air).

  • Thoroughly air dry: Do not wear underwear that has not been completely dried (damp environments can easily breed mold, especially the crotch area of underwear that needs to be completely dry to the touch).

★ Storage skills

  • Bra storage

    • Stacking method: The cup covers are interlocked and overlapped, with the shoulder straps wrapped around the cup covers and placed flat in a drawer (to avoid deformation due to compression).

    • Hanging method: Use a clothes hanger with anti slip hooks, fasten the back button and hang it (suitable for large bras to reduce compression).

  • Underwear storage: Rolling method: Roll the underwear from the waist to the crotch and place it in a compartment storage box (avoid mixing with socks and bras).

  • Regular replacement: Underwear is recommended to be replaced every 3-6 months, and underwear can be worn for up to 1 year (the elasticity and breathability of the fabric decrease after aging, and bacteria are prone to residue).

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