I haven't even heard of it. Here are the product details ladies.
From Switzerland, a nutritive treatment that lengthens and strengthens lashes, helps stimulate faster growth and protects them.
Double Lash - Before Use Double Lash Double Lash - After
Finally, you no longer have to thicken your thinning lashes with multiple coats of mascara! Switzerland’s Double-Lash is the only night treatment specifically formulated for lengthening, thickening and protecting eyelashes. Contains a special multi-protein that works overnight to immediately bond splitting and restore thickness. Meanwhile the exclusive moisturizing ingredients condition dry, brittle hairs to make them softer and more luxuriant. Just brush it on at bedtime, and within a few days you’ll notice a fuller appearance and less "flyaways." In just three to four weeks, the rich nutrients begin to promote healthy, consistent growth. You’ll show off naturally long lashes instead of slathering on the mascara. Use nightly for best results. Safe, sterile and non-toxic, it won’t irritate sensitive eyes. Also works to thicken sparse eyebrows. Comes in a convenient brush-on applicator.
Functions:
Strengthens, lengthens and thickens lashes.
Directions:
Remove all make-up from the eyelashes, brush on Double-Lash with its convenient applicator and allow to take effect overnight.
Ingredients:
Aqua, Magnesium Aluminum Silicate, Butylene Glycol, Propylene Glycol, Alcohol Denat., Xanthan Gum, Lactococcus Ferment, Glycosaminoglycans, Pronline, Riboflavin, Methylparaben, Propylparaben, Hexamidine Diisethionate, 2-Bromo-2-Nitropropane-1, 3-Diol.