We have to use it on wet hair or dry hair? Or we can use it right after shampoo as we use conditioner?

Yes you can apply this to wet hair after shampooing. The suggested usage is: -Use once a week or every three shampoos as needed. -Remove excess moisture from hair. -Apply mask generously to hair. -Massage or comb through to distribute evenly. -Leave on three to five minutes or up to 20 minutes for a more intensive treatment. -Rinse thoroughly and style as desired.