For anyone with dry hair or dry skin who wants one product for both, in any hair type: Paul Mitchell lists it as ideal for all hair and skin types. It suits people who like a light leave-in rather than a heavy cream, and men who want a cooling after-shave lotion.

The gallon size is aimed at salons, spas and barbershops that use it on many clients, and at households that go through the 1 L bottle quickly and refill a pump bottle from the jug.

Most leave-in conditioners stay on the bathroom shelf next to a separate body lotion and an after-shave balm. This one does all three, so the jug replaces several products at a sink or a barber station. The Tingle Complex is what people come back for: tea tree, peppermint and lavender give the skin and scalp a cool, fresh feeling. Buying the gallon keeps the cost per use well below the 300 ml and 1 L bottles.

Paul Mitchell's directions:

• Hair: apply a small amount to clean, damp hair. Style as desired; do not rinse.
• Skin: massage a small amount into skin to refresh and moisturize.
• After shaving: smooth a small amount over freshly shaved skin.

Tip for the gallon: pour it into a clean pump bottle for everyday use and keep the jug closed between refills.

What works well:

• Three uses in one formula: leave-in conditioner, body lotion and post-shave soother
• The tea tree, peppermint and lavender blend gives a noticeable cooling tingle
• Vegan and paraben-free
• The gallon has the lowest cost per ml of any size

Things to know:

• The tingle and the tea tree scent are strong; people who dislike either, or have very sensitive skin, may want to patch-test first
• Contains fragrance and fragrance allergens (linalool, citronellol, coumarin, geraniol)
• A gallon jug is heavy and has no pump, so it needs decanting into a smaller bottle