How we chose: we looked at ingredient lists, how concentrated each oil is (which decides the real cost per bath), long-term buyer reviews, and how long each has stayed on the market. We haven't lab-tested anything. Formulas change, so check the current label before you buy.
For sleep and switching off
Aromatherapy Associates Deep Relax Bath & Shower Oil
The benchmark luxury aromatherapy bath oil. Vetiver, chamomile and sandalwood give it an earthy, grounding smell rather than a sweet one. It's very concentrated: the brand suggests about a capful, so the small bottle goes further than its size suggests. If you want one bottle to see what the fuss is about, start here.
This Works Deep Sleep Bath Soak
Lavender, vetiver and camomile, from the brand behind the well-known Deep Sleep pillow spray. It's a lighter, more classic lavender than Aromatherapy Associates and a good choice if you already like the pillow spray.
Neom Perfect Night's Sleep Bath Oil
Neom's best-known blend: lavender, basil and jasmine. It reads as soft and floral rather than herbal. Its gift boxes are a popular present in the UK.
For scent you'll notice all evening
Jo Malone London Bath Oil
Jo Malone bath oils are less about aromatherapy and more about perfume. They fragrance the whole bathroom in a recognisable house scent such as Lime Basil & Mandarin or English Pear & Freesia. Buy one if you or the person you're gifting already wears the cologne.
Clarins Relax Bath & Shower Concentrate
A plant-extract blend that disperses easily and smells herbal and calm. A long-running classic in department stores, and less greasy than pure-oil formulas.
For soft skin first
L'Occitane Almond Shower Oil
Technically a shower oil: it turns milky in water and cleanses. A capful in the bath leaves skin soft and smells of sweet almond. It's one of the most-gifted body products around, and the large refill makes it good value per use.
Weleda Lavender Relaxing Bath Milk
A gentler, plant-based choice at a lower price. It's a creamy bath milk rather than a pure oil, so it disperses well and suits people who dislike a greasy film.
Affordable classics
Kneipp Bath Oils
German herbal bath oils in a wide range of scents (lavender, eucalyptus, arnica). They're dispersing, inexpensive, and closer to the luxury brands than their price suggests.
Avon Skin So Soft Original
The budget classic, with a famous scent and a big following. It's a floating, mineral-oil-based oil, so it's very softening and very slippery. We have a full guide to it.
How to choose
- Work out the cost per bath, not per bottle. A 55 ml concentrate used a teaspoon at a time can outlast a 250 ml bottle used two capfuls at a time.
- Read the first five ingredients. Plant oils (almond, sunflower, jojoba) or mineral oil near the top means a softening, floating oil. Emulsifiers (polysorbate, PEG) mean it disperses.
- Sensitive skin? Heavy fragrance and essential oils are the usual irritants. Pick fragrance-free and add your own scent, or see bath oil for dry skin.
- Buying a gift? Sets with a candle or body lotion look more generous for little extra. See the gift guide.