Salt of the Earth Crystal Classic Deodorant Stick, 90g (CRYS11)

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Product guide

Salt of the Earth Crystal Classic Deodorant Stick, 90g (CRYS11)

CRYS11: Salt of the Earth Crystal Classic is a fragrance-free crystal deodorant stick made with potassium alum. The listing describes it as aluminium-free and suitable for direct application to clean, damp skin, but customer feedback is mixed on skin irritation.

At a glance

Single-ingredient formula listed as potassium alum, a mineral salt.
Apply the crystal or skin damp, directly to clean skin, according to the listing.
The listing says it dries quickly without sticky residue or white marks.
The listing states Vegan Society certification and Cruelty Free International approval.

Price

£1.62Save 75%

Reference price: ~~£6.49~~

Price checked: 12 Nov 2026

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Often bought together

Salt of the Earth Natural Deodorant Roll On - Unscented - 75ml | Long-lasting Protection, Fragrance Free 100% Natural Origin Ingredients, Unisex Vegan Formula, Cruelty Free International

£5.99

Salt of the Earth - Natural Deodorant Spray - Unscented 100ml | Refillable Long-Lasting Protection, Fragrance Free Vegan Formula, 100% Natural Origin Ingredients, Cruelty Free International

£5.99

Pros and cons

Pros

Unscented and fragrance-free, with a simple one-ingredient formula.
Crystal format avoids a wet roll-on application, and customer feedback notes no white marks on clothing.
Customer feedback reports all-day odour control, including in hot weather.

Cons

Customer feedback is mixed on skin compatibility, with some reporting rashes despite others describing the product as non-irritating.

Technical specifications

14 specifications

Identity
Brand	Salt Of the Earth
Model	CRYS11
Form	Stick
Scent	Unscented
Target audience	Unisex
Ingredient	Potassium Alum
Material type free	Aluminum Free
Material features	Fragrance Free, Natural, Vegan
Application method	Direct Application
Target use	Arm
Number of items	1
Item volume	1 Fluid Ounces

Dimensions and installation
Dimensions listed	4.3 x 4.3 x 8 cm; 90 g
Weight listed	90 Grams

What to know before buying

Listing details to confirm

Directions differ: feature text says to dampen the crystal or body and apply to clean skin, while another direction says to apply under clean, dry armpits. The listing also calls the item fragrance-free and unscented, describes it as an alum stone block and a stick, and gives volume as 1 Fluid Ounces alongside a 90g size. Follow the product packaging for application details and confirm the format and stated volume if they matter to you. The listing describes deodorant protection against odour-causing bacteria, not an antiperspirant claim.

Who is it for?

A good fit for

People seeking an unscented, fragrance-free crystal deodorant with a short ingredient list.
Buyers who prefer a direct-application stick and are comfortable dampening the crystal or skin before use.

Less suited to

Those who need a reliably non-irritating option, as customer feedback includes reports of rashes.
Anyone specifically seeking a scented deodorant or a product clearly described as an antiperspirant.

Salt of the Earth Crystal Classic Deodorant Stick, 90g (CRYS11) · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.3 / 5 · 10,295 ratings

5 stars68%68%
4 stars15%15%
3 stars7%7%
2 stars3%3%
1 star7%7%

Customer feedback describes effective odour control, lasting through the day and avoiding marks on clothing, with positive comments about the natural ingredients and value. Some also report good performance in warm conditions. Skin experiences are mixed, including reports of rashes. For buyers choosing a fragrance-free crystal stick, the odour-control feedback may be relevant, but it does not establish a consistent response for sensitive skin.

Positive themes

Customers report effective odour control and day-long wear.
Customers appreciate the lack of white marks on clothing and the natural ingredients.

Negative themes

Some customers report rashes or irritation.

Mixed feedback

Feedback on skin irritation varies, with some saying it does not irritate them and others reporting rashes.

Frequently asked questions

What is the active ingredient?

The listing names potassium alum as the single ingredient.

How should it be applied?

The listing gives differing instructions: dampen the crystal or skin and apply to clean skin in one section, while another says to apply under clean, dry armpits. Check the product packaging for the directions on your item.

Does it leave white marks?

The listing claims no white marks or sticky residue. Customer feedback also reports that it does not leave marks on clothing.

Is it suitable for sensitive skin?

Customer feedback is mixed. Some report no irritation, while others mention rashes, so the available information does not establish that it will suit sensitive skin.