I was so excited to try this product after reading some amazing reviews for it! I received it free as part of a gift set, and thought the idea was so neat. Estee Lauder products are usually amazing (apart from the animal testing aspect) and I thought this product would work wonders on my lashes.
Unfortunately this wasn't the case. I found the Little Black Primer did honestly absolutely nothing to improve my mascara and lashes. If anything, it made my lashes clump together and appear less fluffy and feathery than they usually would, much less voluminous than if I'd just applied mascara. Really unimpressed since this is literally the opposite of what they claim on their website: "the optimal mascara base for volume, lift and length".
This product might work great for some people, but it's sadly a definite no from me!