Beauty-Full Volume Pre-Wash Conditioner
The advantage of a pre-conditioner is that fine hair has a chance to absorb all of its nourishing, softening benefits, but any slippery, flattening residue is shampooed off. This clever formula plumps hair with volumising agents, seals the cuticle and then detangles too. As you shampoo then dry and style, hair feels more manageable without that unresponsive flimsiness.
Once it was dry, my hair did feel thicker and it looked less flat. In the long term I’d be worried about my hair not getting enough nourishment.