Magnesium Sulphate paste.
Full ingredient list is printed on the pack.
Source: Home Essentials product label.

Please check the manufacturer's label before use, as ingredient lists and formulations can be changed by the manufacturer at any time.

Apply a thick layer to the affected area, cover with a dressing and leave in place as directed on the pack. Use clean hands or a clean spatula to take paste from the jar. Do not return used paste to the jar.

The traditional drawing paste, in an 80g jar
Long used on splinters and similar trapped material
Softens the skin around the area
A little goes a long way
A pharmacy staple worth keeping in the cupboard

For external use only. Keep out of reach of children. Do not apply to broken skin, deep wounds or large areas. Avoid contact with eyes. If the area becomes more painful, red, swollen or hot, or if you have any sign of spreading infection, stop using and see a doctor. Do not use for more than a few days without advice. If you have diabetes or poor circulation, speak to your doctor or pharmacist before use.