BiotulinRevolutionary eyeLASH XXL Mascara Fill-In Concentrate Unique Treatment, Made In Germany

This product mixes well with my mascara making it more manageable to use.

The treatment is super easy to use. You just put the drops into your mascara. I wear mascara pretty much every day so the treatment is being applied daily. I think that my lashes might be a little longer than they were but I can't say that is specifically from the drops. I will keep using and update if I have any dramatic results.

This product works to make your lashes appear thicker and fuller. It works much like a super-charged lash primer. I would give it 5 stars, but it did occasionally clump. The way to prevent the clumping is to slow down and apply this carefully and slowly, but I don't always have that much extra time in the morning to apply one more product. So if you have the time in your morning routine, then this is a good product to try.

This works but for some reason it made my lashes clump up if I don't apply carefully.

I've been using this on my mascara for a few weeks now and I have not seen any change. It has made my mascara last longer though

I am a fan of lengthening serums but I could never remember to apply daily, much less twice a day as most of them recommend. It's a nice time saver to have the growth stimulator right in my mascara. I will say that adding a few drops of this to my waterproof mascara thinned it out a bit so it is far less prone to clump and give me "spidery" lashes. And it is still waterproof - the addition didn't mess up that quality in the mascara. I spend far less time with an eyelash comb since I added this product to my mascara tube. It's only been a couple of weeks but I do think it's having a positive effect on the fullness and length of my lashes.

My favorite mascara was almost completely dried out when I got this. I only added a little bit to the bottle and suddenly it was like I had brand new mascara. I’m not sure yet if it’s doing anything for my eyelashes. I’ve always had incredibly thin short blonde lashes. If nothing else it definitely works to save your old mascara and make it work better than new.

I was super excited to use this as a way to nourish my lashes even if I forgot to put on my regular lash serum but so far I haven't seen a massive difference in their length or thickness since I started using this and I've been using it for 2 months now.