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Ships within 48 hours · Estimated delivery Jul 14 - Jul 19
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Description
rainfast herbicide Rainfast® Surfactant/Wetting AgentThe 100% active ingredient, a non ionic surfactant to enhance ag chemical performance through rain fastness, leaf wetting, and stomatal flooding We cannot ship this product into: AR CA DE ID MS PRODUCT INFORMATION Produces rain fastness, leaf wetting, and stomatal flooding Maximizes performance of pesticide and foliar fertilizer applications. Keeps your solutions on target plants and produces stomatal flooding. Does an unbeatable job in water based
The 100%-active ingredient, a non-ionic surfactant to enhance ag chemical performance through rain-fastness, leaf wetting, and stomatal flooding
We cannot ship this product into: AR CA DE ID MS
PRODUCT INFORMATION
Produces rain-fastness, leaf wetting, and stomatal floodingMaximizes performance of pesticide and foliar fertilizer applications. Keeps your solutions on target plants and produces stomatal flooding. Does an unbeatable job in water-based sprays and with fungicide applications. Six to 12 ounces treats 100 gallons of spray solution; 1 gallon treats 1,100 to 2,100 gallons of spray solution.
- Improves pesticide efficiency
- Produces superior leaf wetting, spreading, and penetration
PRODUCT FEATURES
What are the usage rates for Rainfast?Usage rates are:
- 6-12 ounces per 100 gallons of solution
- 1 ounce per 100 gallons in foliar fertilizers.
Depending upon pesticide labels, apply 6-12 ounces per 100 gallons of water.
Follow pesticide labels carefully for specific use recommendations with post-emergence herbicides.
What is Rainfast?
Rainfast is a highly effective nonionic surfactant/wetter/spreader penetrant, based on chemistry that provides superior leaf wetting, spreading and penetration of spray solutions.
You can maximize the performance of pesticide or foliar fertilizer sprays by keeping the solution on target plants. Rainfast produces rain-fastness quickly. Follow the chemical label for usage rates.
File Downloads
Rainfast Safety Data Sheet (Size: 168.8 KB)
Rainfast Sell Sheet (Size: 189.1 KB)
Rainfast Spec Sheet (Size: 83.3 KB)
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
Based on 1012 reviews
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Product Reviews
★★★★★ 5
Great product!
Size: 5 Ounce (Pack of 1), Style: SPF 50+
I took this to Hawaii. It's great sunscreen and good to use in the ocean
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Reviewed in the United States on June 1, 2026
★★★★★ 5
Safe for reefs
Size: 5 Ounce (Pack of 1), Style: SPF 50+
Great product and essential when visiting st John
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Reviewed in the United States on April 28, 2026
★★★★★ 5
For Professional Outdoors Folks, THIS WORKS!
Size: 5 Ounce (Pack of 1), Style: SPF 50+
I am in the sun approximately 300 days a year and I have used everything available. I am on the water daily and there are only 2 products that 1) work and 2) stay on when wet; Blue Lizard and Doo's. Both have nutrients and moisturizers keeping your skin young. This stuff WORKS! Highly recommended.
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Reviewed in the United States on April 23, 2026
★★★★★ 5
Worked well for 4 days spent poolside in 104° temps
Color: White, Size: 0.15 Ounce (Pack of 1)
I purchased this specifically for the Zinc/ mineral based SPF factor. There are not a lot of great options for a sun BLOCK lip balm. This is about the highest SPF I could find, in a tube/stick applicator. We use 70 and 50 alternatively and apply often for our bodies and face, but we needed an extra layer for the lips. (They really are very delicate tissues)
We like the texture, I didn't notice a flavor or odor, so I guess that's good right? I did not see any white cast to it and honestly I would not care if it did, I just want a sun block for my lips while we are poolside. It worked well.
A slight tingly feeling to my lips for the first 30 seconds when applying it, but it did not sting or irritate my skin/lips.
We went 4 days of poolside lounging and swimming with about 5-6 hours a day at the pool. We were in and out of the shade, in and out of the water, at at very dry desert Nevada 104° sunny location. We reapplied about every 1.5 - 2 hours, or if we felt like we needed it after eating or drinking something. We did not burn nor peel, our lips were soft and great.
I will keep using it and will likely purchase again, when needed. It's a good brand.
Aside from straight up old fashioned white or colored lifeguard zinc sticks, this is a less "clown like makeup" option.
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Reviewed in the United States on July 11, 2025
★★★★★ 5
Great Product
Color: White, Size: 0.15 Ounce (Pack of 1)
This lip balm was recommended by my surgeon to protect my lip from uv rays. Surprisingly, it does not have that yucky spf taste other lip balms have. It does create a white cast, but I find if I lightly put it on the cast is not prominent, and I am Caribbean with deep tan skin.
Very grateful this lip balm does its job!
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Reviewed in the United States on March 1, 2026