(2-Pack) Razor Bump Skin Care Treatment

TL;DR: I bought this mainly for the "chromabright" claims. Pros: It is the only product that works for me after YEARS of sun damage and other ailments. Cons: Doesn't last long (for me) and the instructions don't say whether to rub the product in or let it dry naturally. Now on to the in-depth review. I've been using it on my arms and a few other places for a little more than a week and I have to say that this product is the fastest working product that I've tried. I have PCOS and hirsutism, which can cause dark areas in certain spots. I bought this mainly for my arms because when I was younger, I would play outside everyday with no sunscreen (which is a HUGE no-no, especially if you live in a hot, humid climate like the southern US), and my arms suffered terribly for it. They were at LEAST 3 shades darker than the rest of my body, which led me to feel very insecure about them. At the time of writing this review, it has lightened a lot (in my opinion), and I think that after 3-4 months of consistent use, they will be the same skin tone as the rest of my body (I will update my review with before and after pictures once I consistently use this product for at least 6 months). This product doesn't last very long (at least for me it doesn't; I've had it for a little over a week but it's almost empty. Maybe it's more intended for smaller surface areas rather than a whole arm or leg), and the instructions aren't clear on whether to rub the product in or let it dry naturally. I tried both and got a better result by rubbing it in because if I let it dry naturally, it would only leave white streaks on the areas. I use it twice a day (morning and night) and SOMETIMES three times a day. Hopefully this product is continued because this is the only product that I can depend on that also doesn't cost a fortune! Edit: They went up on this product by $10, making it $39.95 at the time that I'm updating my review. It was $29.95 the last time I ordered it, which was about a month ago. What gives? Nearly $40 for something that barely lasts a month is ridiculous! I won't be buying it until it comes down to the original price!