CurlKit Labor Day Sale: 30% Off Coupon! Posted by Hello Subscription on October 11, 2017. Subscription Box Coupons & Deals / CurlKit Coupons Hello Subscription may earn compensation via links in this post. Read the full disclosure Save for Later Notification CurlKit is having an October sale! Save 30% on boxes including on longer-term subscriptions (find them under the membership tab)! Use promo code OKTOBERFEST30. Visit CurlKit to get this offer.