I recommend double cleansing especially if you oil your hair before the shower. This will help to cleanse your hair and remove product build-up. This will leave your hair feeling light and prepare it for the blow out.
The conditioner will help your hair feel soft and shiny. The key for voluminous hair is to use a conditioner that is light weight.
To ultimately cleanse your scalp you can use a scrub. I don't recommend doing it more than once a week. If you have damaged or frizzy hair you can use a lightweight hair mask to help to repair your hair.
The secret to healthy hair is healthy roots. For that I recommend the fable&mane oil. Use it once a week before the shower. After the blowdrying you can use the Gisou hair oil for ultimate shine.
The key is to use the right styling products and don't forget the heat protectant to maintain healthy hair.
For the best blow out I recommend these tools. The secret is to create a lift at the roots and use the curling or round brush attachment. And voilà the best blowout ever!