I am 28 and I look fine overall. Recently I went beach with friends and when everyone changing to swimwear I just couldnt. Dark underarms and inner thighs. I was standing fully covered while everyone in water. Tried many creams nothing works. Nobody talks about this but so many people have this problem. Two things together can fix this, soft innerwear that stops friction which causes darkness and a good cream that lightens without irritation. Most brands do only one whoever solves both together already has big customer base waiting.