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Space Hygiene: Female Astronauts' Unique Challenges
3 Apr
Summary
- Water behaves differently in microgravity, forming sticky blobs.
- Powders are avoided; creamy products and rinseless shampoos are used.
- Past NASA kits included makeup, deodorant, and generous tampon supplies.

Navigating daily life in space involves significant hygiene adjustments, particularly for female astronauts.
In microgravity, water forms sticky blobs, altering routines for tasks like washing hair and brushing teeth. Instead of flowing water, astronauts use rinseless shampoos and must carefully manage toothpaste. Powders are avoided due to potential damage to equipment and lungs; instead, creamy personal care products are utilized.
Historically, NASA's approach to astronaut personal hygiene has evolved. Early missions required minimal supplies, but by 1978, NASA developed makeup kits for female astronauts. Later, a need for "more female-friendly lotions and potions" and even a large supply of tampons were identified, demonstrating a growing recognition of diverse astronaut needs.
These personal care challenges extend to nail care and shaving. Astronauts must cut their nails and vacuum the residue to prevent them from floating. Shaving requires generic razors and unscented cream. Some astronauts, like Serena Auñón-Chancellor, found makeup to be more trouble than it was worth in space, while others noted positive effects on their skin due to fluid shifts.