Good Genes smells a little unusual, herbal, like lemongrass. It's not horrible, especially if you're used to essential oils or other herbal products, and if you use it enough you honestly can't smell it anymore. I use it 2-3x a week on my very sensitive, acne-prone, very pale and redness-prone skin. I use 2 pumps on my whole face or 1 pump on my cheeks, chin, and jaw alone, where I've had mild to moderate cystic acne for a while and my skin is less sensitive. It does irritate my nose and forehead a little, so sometimes I avoid putting it there if my skin is feeling itchy or irritated. The product has been a miracle for me. I wouldn't have shelled out for it on my own, but I received a sample in a subscription box about 4 or 5 months ago. Good Genes decimated my cystic acne in less than a month and smoothed out skin colored surface bumps I had all over my cheeks and forehead (milia? closed comedones?). It has also significantly diminished red marks from healing acne as well, though this effect is slower and taken place over months. I also use it as a spot treatment occasionally, usually if another skincare product or makeup breaks me out, because I sure haven't been getting cystic acne anymore. It melts whiteheads/pustules overnight and kills the occasional cyst in a day or two.
I will say, it's not cute to apply, it immediately turns my whole face bright red, but I go to sleep and wake up with soft, smooth, even-toned skin, not red at all. I would not recommend applying this in the morning and obviously use sunscreen every day while using anything with lactic acid in it.
I don't know what to make of the price, whether this is overpriced or not, but I will continue to buy it and I guess that's how pricing of consumer goods works. It is expensive and I don't like that. I don't have a ton of disposable income, but I am willing to pay to feel good about my skin if it's worth it, and this is. Using it as I do, the 1 oz bottle lasts for a few months. I bought my bottle 3 months ago and it's about half gone. I am curious to try dupes or cheaper alternatives, and would be willing to do so. I have purchased lactic acid 5% from other brands with the intent to test them soon. Right now, my skin looks the best it's looked in years and people close to me have been noticing too.