Skip to product information

Osma

Osma Tradition Alum Block Post Shave Astringent, 100g

Osma Tradition Alum Block Post Shave Astringent, 100g

Regular price $15.15 CAD
Sale price Now $15.15 CAD Regular price
Sold out
Shipping calculated at checkout.

📦 Add a 2nd item to reach $75 CAD & unlock FREE Tracked Global Shipping!
🌿

Premium Osma Stockist

Guaranteed Authentic. We proudly stock genuine, lab-tested formulations sourced strictly through official North American distribution channels.

🛡️ The Authorized Advantage
FeatureStandard RetailersSama Homes
Global ShippingVaries / Slow Priority Air
Free ShippingOften $150+Over $75 CAD
Warranty StatusUnknown Full Lifetime
Product AuthenticityRisk of Fakes 100% Guaranteed
The Sama Standard

"We are Verified Authorized Partners. I personally guarantee that this instrument is authentic, untouched, and backed by the full manufacturer warranty."

Megha Tyagi
✈️ Global Priority Shipping (100+ Countries)
CAN / USA
3–5 Days
UK / EUROPE
5–9 Days
AUSTRALIA
7–12 Days
REST OF WORLD
9–15 Days
Guaranteed Safe Global Checkout
💳🔒🍎🅿️

Osma Tradition Alum Block (100g) – Natural Post-Shave Astringent

The ultimate post-shave utility tool. The Osma Tradition Alum Block is a mandatory staple for any serious wet shaver or professional barber. Crafted in France from 100% natural Potassium Alum crystal, this 100g block serves as a rapid-action astringent to soothe razor burn, tone the skin, and immediately seal nicks, cuts, and weepers.

Even the most experienced hands can experience a slip of the blade. The Osma Alum Block provides immediate tactile feedback on your shaving technique while acting as a natural antiseptic to close open pores, leaving your skin with a clean, tight, and matte finish.

Barber-Grade Specifications & Features

  • 100% Natural Crystal: Pure Potassium Alum with zero synthetic additives, fragrances, or harsh chemicals.
  • Instant Nick Sealer: Rapidly stops bleeding from minor shaving cuts and minimizes post-shave redness.
  • Technique Feedback: Provides a slight tingling sensation on over-shaved areas, highlighting where you applied too much razor pressure.
  • Industrial Longevity: The dense 100g block will last for months, even with daily professional use.
  • Crafted in France: Manufactured by Laboratoires Osma, the industry benchmark for traditional shaving alum.

Frequently Asked Questions

How do you use the Osma Alum block after shaving?

After your final shave pass, rinse your face with cold water. Wet the Osma alum block with cold water and gently glide it over your shaved skin. Leave the residue on for 30 to 60 seconds, rinse thoroughly with cold water, and pat dry before applying your preferred aftershave splash or balm.

Does an alum block stop bleeding from razor cuts?

Yes. Potassium Alum is a natural hemostatic agent and astringent. It instantly constricts blood vessels and tightens pores to stop bleeding from minor nicks and weepers caused by safety razors or shavettes.

SKU:OS-BP2-OT

View full details

Have a specific question?

From our worldwide shipping policies to our eco-friendly sustainability practices, we have the answers.