When my hair was relaxed, I used hair dressing every single night. I really thought it would help with my hair, but all hair dressing did was give me greasy hair. It continued to break off, but in greasy, crunchy little bits. None of that stuff worked. The only thing that worked for me was to totally eliminate all forms of damage from my hair.

I mean, you can use hair dressings for extra conditioning on your ends if you want, just so you know that nothing heals damaged hair (no matter what misinformation may be put out there by the hair care companies to sell products--they can legally lie about what their products do).There's nothing wrong with using it though. My only two cautions would be:
1) to please not to put it on your scalp (or at the very most, the very lightest amount and make sure your scalp gets washed with a mild conditioner to prevent any follicle damage from buildup, and
2) Please be cautious about the ingredients. Try to make sure you know everything that's in it. If it's a hair dressing, I would prefer to see all natural oils in it. Sometimes companies can throw in other ingredients (such as rubbing type alcohol or acrylates and such to cut down on frizzies, but these can often be drying and make your hair sticky), but if it's a hair dressing, then I believe it's only function is as an emollient for your hair.