Cheapest Bar Soap in the UK

Prices updated 13 October 2026 · 185 products across 7 supermarkets

The best-value bar soap in the UK right now is JUST ESSENTIALS by ASDA Salad Tomatoes at Asda — £0.17/each (£0.99).

185Products Compared

7Supermarkets

£0.17Lowest /Each

We compare bar soap across all 7 major UK supermarkets — Tesco, Sainsbury's, Asda, Morrisons, Waitrose, Aldi and M&S — and rank by price per unit so you can see where bar soap is genuinely cheapest. Prices update daily.

JUST ESSENTIALS by ASDA Salad TomatoesAsdaBest value£0.17/each£0.99 2

Palmolive Naturals Moisture with Olive Bar Soap Value Pack x6Asda£0.50/each£3.00 3

Essential Sensitive Soap BarsWaitrose£0.53/each£2.10 4

Essential Chamomile Bar SoapsWaitrose£0.53/each£2.10 5

Grace Lily 3 x 70g Bath FizzersSainsbury's£1.33/each£4.00 6

M&S Rose Soap Trio 3 per packM&S£1.67/each£5.00 7

Sainsbury's Everyday Bath Muscle Therapy Bath Soak 750mlSainsbury's£1.87/litre£1.40 8

Sainsbury's Everyday Bath Sleep Therapy Bath Soak 750mlSainsbury's£1.87/litre£1.40 9

Sainsbury's Everyday Bath Moisture Therapy Bath Soak 750mlSainsbury's£1.87/litre£1.40 10

Cussons Creations 500ml Mallow Magic Bath SoakSainsbury's£2.00/litre£1.00 11

Cussons Collection 500ml Uplifting Peony & Cherry Blossom Bath SoakSainsbury's£2.00/litre£1.00 12

Cussons Collection 500ml Calming Gardenia & Chamomile Bath SoakSainsbury's£2.00/litre£1.00 13

Cussons Creations 500ml To the Moon & Back Bath SoakSainsbury's£2.00/litre£1.00 14

Imperial Leather 850ml Muscle Recovery Bergamot & Sea Minerals Bath SoakSainsbury's£2.65/litre£2.25 15

Imperial Leather 850ml Relaxing Lavender & Wild Iris Bath SoakSainsbury's£2.65/litre£2.25 16

Imperial Leather 850ml Luxurious Rose & Frankincense Bath SoakSainsbury's£2.65/litre£2.25 17

Tesco Essentials Soap 125GTesco£2.80/kg£0.35 18

JUST ESSENTIALS by ASDA Just Essentials Soap 125gAsda£2.80/kg£0.35 19

Radox Sleep Aromatherapy Bath Soak Bubble Bath 1LSainsbury's£3.00/litre£3.00 20

Radox Mineral Therapy Muscle Soak Bath Soak Bubble Bath 1LSainsbury's£3.00/litre£3.00 21

50g Bath FizzerSainsbury's£3.00/each£3.00 22

ASDA Sensitive Soap Bar 500g (4 x 125g)Asda£3.14/kg£1.57 23

90g Let's Get Fizzy Bath BombSainsbury's£3.50/each£3.50 24

Westlab Pure Mineral Epsom Bath Salt 1kgSainsbury'sNectar £3.00£3.80/kg£3.80

See The Live Bar Soap Comparison →

Cheapest Bar Soap: FAQ

Where is the cheapest bar soap in the UK?

Right now the best value bar soap is JUST ESSENTIALS by ASDA Salad Tomatoes at Asda, £0.99 (£0.17/each). SmartShelf ranks bar soap by price per unit across 7 supermarkets, updated daily.

Which supermarket is cheapest for bar soap?

We compare bar soap across Tesco, Sainsbury's, Asda, Morrisons, Waitrose, Aldi and M&S. Today Asda has the cheapest option, but the ranking updates every day as prices change.

How does SmartShelf compare bar soap prices?

We list each product's price per unit (£/kg, £/litre or per item) so you compare like for like, and we show loyalty prices such as Clubcard and Nectar where available — free, with no sign-up.