My heart throb product for extra volume is seawater that leaves hair absolutely not sticky nor coarse. To be applied on the roots before drying your hair. I also suggest using a dry shampoo, the one by Sachajuan is amazing, it has no smell and exists in travel format.
Seawater spray « 20 rue Boissière » 40€
Sold only at « 20 rue Boissière »
20, rue Boissière 75116 Paris
Spray volume powder Sachajuan 21€