Made for fine, thin or thinning hair that falls flat, and for brittle strands that snap easily. Mon Platin positions it for anyone after more body and fullness, and says it is safe on colour-treated hair. It is a consumer-friendly rinse-out mask from a professional line, easy to use at home once or twice a week.

Fine hair usually has to choose between moisture and lift, because the oils and butters that soften it also weigh it down. The Boosting mask tries to give both by pairing hyaluronic acid, which holds water in the strand, with a calcium polymer that the brand says supports the fibre and builds fullness. It makes most sense for people whose thin or brittle hair feels dry but goes limp under ordinary masks.

• Shampoo, then towel-dry so hair is damp, not dripping.
• Apply the mask from mid-lengths to ends, working towards the roots if your scalp tolerates it.
• Leave on for 3 to 5 minutes.
• Rinse thoroughly.
• Use 1 to 2 times a week.

Pros

• Aimed at fine and thin hair, so it conditions without the heavy finish of a typical repair mask
• Calcium polymer is there for body, not just softness
• Short 3 to 5 minute processing time
• SLS/SLES-free and paraben-free per the brand

Cons

• A rinse-out treatment: it won't hold volume through the day on its own the way a styling product does
• No full ingredient list published by the brand
• Large 500 ml jar is a commitment if you only want to try it