Several hair products that I would recommend to people whose hair is thinning out would be...
It is made for scalp and fragile, thinning hair.
I would pair that up with the Energizing Lotion also by Davines in order to revitalize and strengthen the scalp and fragile hair, prone to falling out.
I would also recommend the Well-Being Conditioner. It would go hand in hand with the Energizing Shampoo. It is a hydrating conditioner for all types of hair.