Beauty Question: Which Discontinued Beauty Product Do You Wish Would Come Back?

Don't you hate when your favorite beauty product is discontinued all of a sudden? I can't tell you how much it hurts my heart when that happens. My all-time favorite hair product, Frederic Fekkai Straight Away, was discontinued a few years ago and it's been eating away at me ever since. Luckily, I had one tube that I used very sparingly -- but, lo and behold, it finally ran out today. Sadness! So my beauty question of the day is this: Which discontinued beauty product do you wish would come back? Let me know in the comments!