I started with these for 90 days because I had stress and medical issues, and my hair had begun to thin dramatically as a result. It was literally falling out in the shower, but I went on the whole Joyce regime: the supplements, the keratin shampoo and conditioner AND the hair serum once per day. It's not thicker as a whole yet, but hair is growing into the thinning parts of my scalp. Most noticeable was the fact that compared to shedding 50+ little hairs around the sink and in the shower every day, I am down to maybe 1-5 hairs per day. It's strengthened my hair at the root, so there's that. Also, hair volumizing products seem to absorb and perform better. Hair does not feel "stripped" or dry after using her products. I thought she was just selling a big bag if wind on t.v., but had to see for myself: the products ARE good. I have used certified organic shampoos and they were awful. Been using this supplement for a month & half now and I will continue on the Joyce hair regime and see how much more things will improve in 6 mos. How are you gonna know if you don't try them? I wouldn't say that you should just expect your hair to improve, but look for the other health benefits that show up on your skin, nails and overall well being after using these products. If you think you could be doing more for your well being, then you should try these products.