Hair oils, like the Elixir Ultime range, tend to focus on shine, smoothing and nourishment, ideal for taming frizz in humid conditions. Hair serums are typically lighter and often target specific concerns such as breakage or scalp health. Both can be used in summer; your choice depends on your hair's primary need during the season.

As a general guide, once a week is a good starting point for most hair types. If your hair is particularly exposed to sun, salt or chlorine, you may find it benefits from more frequent use. Listen to how your hair feels and adjust accordingly.

UV rays can affect hair just as they affect skin, contributing to dryness, colour fading and weakened strands over time. Products with UV filters offer an additional layer of care during prolonged sun exposure.