u/Affectionate-Net5524

So I recently bought the Kérastase Resistance Bain shampoo and conditioner from my local salon as it was a recommendation from my new stylist. I have long fine hair. I also get it colored every 4/5months. After using the shampoo and conditioner for a month now I am noticing my hair is getting very thin. I rarely use heat on my hair and I only wash my hair every other day. I just turned 25yr old and the stress of my pony tail getting smaller and seeing gaps on my scalp when putting my hair up is really getting to me. I am hoping that someone on this thread can give me some advice :,( TYIA