Is Aluminum (in antiperspirants) safe in skincare?

What it is

Aluminum salts are the active ingredients that make an antiperspirant (as opposed to a deodorant) work — they temporarily plug sweat ducts to reduce wetness. This is the ingredient behind long-running online worries linking antiperspirant to health concerns.

What the sources say

Major health and regulatory bodies have reviewed the aluminium-in-antiperspirant question and have not established a causal link to breast cancer or Alzheimer's disease; those claims are not supported by the current evidence. Aluminium salts remain permitted as antiperspirant actives.

Hazard vs. real-world risk

This is an area where fear has outrun the evidence. The reviews to date do not support the widely shared claims. People who prefer aluminium-free products can choose deodorants (which mask odour rather than block sweat) as a straightforward alternative — a preference, not a safety necessity.

Vegan & cruelty-free angle

Aluminium salts are mineral-derived and vegan.

Hazard is not the same as risk

This is the idea Clarra is built around. A regulatory hazard classification describes what an ingredient could do in principle; risk is whether it actually does at the amount, and in the way, you're exposed. An ingredient can carry a hazard flag and still pose little real-world risk in a finished product used normally — which is why regulators so often set a concentration limit instead of a ban. Clarra shows the flag, names the source, and leaves the judgement to you.

What Clarra reads on every product

• Ingredient flags — how named regulators (EU CosIng, IARC, Prop 65, CIR, ECHA) classify or restrict what's inside, with hazard kept separate from risk.
• Cruelty-free status — shown with positive framing: what a brand states or is certified for, never an accusation.
• Vegan status — flagging animal-derived ingredients like carmine, beeswax and lanolin, and honest about ambiguous-source ones.