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Ingredient guide
calcium hydroxide
In short
A strongly alkaline pH adjuster used in specific products like depilatory creams. Its safety depends on the finished formula’s pH, as the raw material itself is highly irritating at high levels.
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Best used
Anytime
What it is
Strong alkaline pH adjuster used in depilatory creams and some professional peels. Highly irritating at high concentrations. In finished products it is typically neutralised — the final formula pH determines safety, not the raw ingredient alone.
Also found as
Where to find it
Veet Silk & Fresh Hair Removal Cream
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Common questions
It raises pH in formulas that require an alkaline environment, such as certain depilatory products. In most finished products it is neutralised and doesn’t act as an irritant on its own.
It can be irritating in raw form, but products that use it are carefully pH‑balanced. The safety depends on the final formula, not the ingredient by itself.
It is mainly found in hair removal creams and some professional peel systems.
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Personal guidance only · For clinical concerns, see a dermatologist.