The 6 Best Alum Blocks

Updated December 15, 2016 by Steven John

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We spent 22 hours on research, videography, and editing, to review the top choices for this wiki. For any refined gentleman, no shave is complete without the subsequent use of one of these alum blocks. When moistened, these crystal-like sticks or stones are gently rubbed over the shaved area to act as an antiseptic, an astringent, and to combat razor burn. They can also help to stop bleeding from small nicks and cuts. When users buy our independently chosen editorial picks, we may earn commissions to support our work. Skip to the best alum block on Amazon.

6. Osma Laboratories Alum Stone

An Osma Laboratories Alum Stone is made from pure, hand-cut potassium alum, unlike many options that are created by compressing powdered material into a bar. That helps to explain why this block costs twice as much as many options, and then some.
  • comes with protective case
  • can be used on all minor cuts
  • cracks too easily
Brand Osma Laboratoires
Model pending
Weight pending
Rating 3.9 / 5.0

5. Taylor of Old Bond Street

With a name like Taylor of Old Bond Street, you would expect a company to create a high-quality, refined product. And that is just what you will find in this fine shaving item, which cools and soothes the skin after a shave.
  • lasts for years if regularly dried
  • good for men who shave their heads
  • shatters easily if dropped
Brand Taylor of Old Bond Stre
Model 1102
Weight 0.8 ounces
Rating 4.4 / 5.0

4. Edwin Jagger Antiseptic

The Edwin Jagger Antiseptic is proudly produced in Sheffield, England. Not only can it help staunch the bleeding from shaving cuts, but its styptic effect closes pores as well, helping to make your complexion less oily and more even.
  • sizable 54 gram bar
  • good gift for refined gentleman
  • slightly overpriced option
Brand Edwin Jagger
Model pending
Weight 6.4 ounces
Rating 4.3 / 5.0

3. Bloc Osma

This Bloc Osma bloc d' alum is made in France and has a fantastically low price for an imported item. The company has been crafting fine shaving products for six decades, so clearly they have their products honed to perfection by now.
  • can be used as deodorant
  • made from pure potassium alum
  • very small block size
Brand Bloc Osma
Model BLOC1
Weight 2.9 ounces
Rating 4.5 / 5.0

2. RazoRock Block

The RazoRock Block comes with a protective plastic case that is suitable for daily storage of your chunk of alum and which will serve perfectly during travel. This alum helps to quickly seal those minor cuts and nicks caused by shaving with a razor.
  • works as an aftershave
  • reduces redness of acne
  • antibacterial properties
Brand RazoRock Block
Model pending
Weight 0.3 ounces
Rating 4.7 / 5.0

1. Gentleman Jon

Fight back against razor burn with this offering from Gentleman Jon. The large 3.7 ounce block will last for many months (or potentially even years), even with daily use. It will leave you feeling clean and refreshed shave after shave.
  • naturally antiseptic
  • great low price tag
  • great reviews from gentlemen
Brand Gentleman Jon
Model pending
Weight 4 ounces
Rating 4.7 / 5.0

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Last updated on December 15, 2016 by Steven John

When not writing or spending time with his family, Steven tries to squeeze in some mountain climbing. In addition to writing for several websites and journals, Steven has published multiple novels.

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