Give me solution for long hair ?
Really, the best things you can do are take care of your hair, eat healthy and be patient.
Use deep conditioning treatments once per week, penetrating oils, sulphate-free cleansers etc. Only comb/finger detangle when your hair is covered in conditioner or coconut oil.
Don't keep staring at your hair waiting for it to grow.
Really though, this is a very broad question.
Yes, a healthy diet and moisturizing is important. Also, I like to use lavender oil in my hair. It works pretty well. So does massaging your scalp, which helps circulation. Keeping it clean is important, too.
If you want instant long hair you can use hair extensions. The best hair extensions are those which are most compatible with your own hair type, texture, color and current condition. I get mine from Glamorous Lengths.
Massage your scalp with coconut oil or olive oil and use a mild shampoo. Keep your diet healthy and increase your vitamin and mineral intake.
One thing to consider though before putting in all of the work growing out your hair is how important volume is to you. I had very voluminous hair before and loved that it was so big and I definitely didn't expect the insane loss of volume (although it does make sense that it gets heavier the longer it gets). I have some layers (the shortest being around chin length when dry), but I have so much less volume than I did before at (hair around bust level) that I'm seriously considering chopping a good 6-8 inches in order to get my big curly hair back.
Does anyone have any tips on how to get volume in long hair? I try not to use hairspray or anything very "grippy" very often because it causes tangles.