KOSO: traditional Japanese postbiotic superfood drink and cleanse for gut health. R's Koso has sponsored 6 YouTube channels in 14 videos tracked by SponsorRadar, most recently on September 25, 2026. Channels it has sponsored include Chani Japan and Yasuko Kawamura. In the last 12 months its deals went mostly to Lifestyle & Vlog and Health & Fitness channels, typically with 250K to 1M subscribers. Its recent sponsored videos have an estimated value of $779 to $1.6K each.
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YouTube channels sponsored by R's Koso
Latest videos sponsored by R's Koso
“R's Koso (15% off with code HANNA) https://www.dpbolvw.net/click-101758833-17306624”
“🇯🇵For anyone interested in R's KOSO, here's the link✨✌️ ▶ https://www.dpbolvw.net/click-101110351-14494750 Use code SAMURAIGUT for 15% off…”
“For your gut health I recommend R's Koso: 🍾R's Koso use 'CHANIHEALTH' for 15% off: https://www.dpbolvw.net/click-101535831-14494789”
“Shop R's Koso here: https://bit.ly/rskoso 15% Discount Code: YASUKO”
Other brands in Lifestyle & Vlog
Yes. SponsorRadar has identified 14 sponsored videos from R's Koso across 6 YouTube creators, with deals as recent as September 2026. That makes them an active buyer of creator sponsorships, not a cold prospect.
Creators sponsored by R's Koso include Chani Japan, Yasuko Kawamura, Samurai Matcha. The full roster is above. Before pitching, check that your channel's niche and audience size are comparable to the channels they already work with.
Brands that already sponsor creators respond to pitches that show fit: reference the kind of channels they sponsor, lead with your audience data, and include your rates. Our guide to getting sponsored by R's Koso breaks down their channel-size and niche patterns from tracked deal data.
Every R's Koso deal and the right contact are on Creator Pro. Start free.
