NOTICE: Because of the outbreak of COVID-19, logistics transportation become slow.
Your position: Home > FAQs
Recommended Products in FAQs

Frequently Asked Questions

1. How can I get the right size and shape for your nostrils fit? 
- Shoot a picture of your nostrils to see if you have round or slotted/narrow nostrils. Size is very important to ensure the nasal filter/dilator's efficacy and durability. First-time buyers are recommended to order the Multi-Size-Pack. For the nasal filters, if you hace round nostrils, Multi-Size-Pack(S/M/L/XL) Round is recommended to you. If you have slotted/narrow nostrils, Multi-Size-Pack(S/M/L/XL) Slotted is recommended to you. For nasal dilators, first-time buyers are recommended to order the Multi-Size-Pack(S/M/L/XL).
Everyone's nose is shaped differently, and choosing Multi-Size-Pack is more efficient than measuring the nose size by yourselves. 

2. How can I choose the right nasal filters?
- WoodyKnows has 6 kinds of nasal filters, Ultra Breathable (UB), Super Defense (SD), Gas&Pollutant Reducing(GP), Super Breathable (SB), Super Defense Max(SDM) and 3 in 1(Combines UB&SD&GP). The breathablility of them is as followed, UB>>SB>>SD>>GP>>SDM, while the filtration efficacy is on the contrary, UB<
3. How can I clean the nasal filters/dilators? 
- We don't recommend you to wash the replacement filters because this will affect its filtration effect. The replacement filters need changing every 1-3 days. The filter frame/nasal dilator should be washed every day for hygiene with soap or 70% alchol for maximum protection and avoid avoid direct sunlight. With proper care, the frame/dilator could be used for more than 1 month.

4. How long will my order be processed? 
- Your order will be processed in 1-2 business days after the payment. There will be a delay if the carriers stop service during Chinese Festivals.

5. Payment method. 
- Currently we only accept paypal. Thanks.




About Woodyknows
Introduction to WoodyKnows
Pollen Information
Today's Allergy Forecast Map for US
Seasonal Allergens
Find Your Senstive Plant
Contact Us
Customer Support
Privacy Policy