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Cold weather
what ingredients to be added into formulation when making products like cream, lotion, toner to Countries like Russia? Glycerin and?
What % will be proper? Many thanks -
4 Replies
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There’s not really some magical ingredient that works in all cases. It just depends on your formula. Propylene Glycol is an option for many things. But also formulating products such that they are stable even after being frozen then thawed.
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Look up freeze/thaw stability testing procedures. If you pass the stability testing, nothing else needs to be done to your product. If you do not, the strategies for improving stability are numerous, and which you pick depends on the product and the needs of the market that it’s being sold to. (For example - some waxes can add freeze/thaw stability - but adding more than a very little wax to an emulsion makes it feel horribly draggy on skin. If you are selling products for construction workers, they may not care. But others..?)
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Agree with Bob. Freeze/thaw test everything. Well, not shampoos and conditioners maybe!
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Some general guidelines for propylene glycol’s antifreeze properties in emulsions would be useful for me, to give you a starting point for testing.
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