Need some helps girls.. how to keep hair looking healthy for few more days after washing them;)?

pinky100
Washed my hair 1day ago and today i noticed they start slowly getting dry.. i don't want to wash them all again. Plus my hair is very long so it' ll be a pain :(.
Any tips to save them from getting dry for a few more days. P. S dry shampoo won' t help me! Just gives me dandroff..
Need some helps girls.. how to keep hair looking healthy for few more days after washing them;)?
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