Waterproof DIY Lash Extensions 💦 My favorite bond is the black but white is growing on me as it’s truly invisible. I love the longevity of the black blond, here I’m wearing the style Flora. I will get a good 5-7 days and then I switch them out. I like a fresh set every week because it’s our eyes and we don’t want to mess around with that. I have had this bond last 10-12 days but I do not recommend as dirt, makeup, & oils can build up. I do not think it is healthy for the eyelashes/eye even if you clean it properly.