Thank you for viewing! (*´∀`)♪ Instant purchase is OK! Basically, it's first-come, first-served, even if there are questions ( ^ω^ ) Please also check the shipping days m(._.)m Please check the profile before purchasing (^ ^) [Product Description] Reduces condensation on window glass and prevents water drips. ● Simply apply to the window glass in your room to reduce water drips caused by condensation. (Gives the glass surface a water-repellent effect, and prevents water drips from condensation through surface tension.) ● It is also resistant to wiping and the effect lasts a long time. ● The effect lasts for about 30 days. If you have any questions, please feel free to comment and ask ( ´ ▽ ` )