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pH question
When formulating a hair mask, are pH values between 4.3-4.6 safe for hair and how does that effect what preservation is needed? Just looking to understand better.
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6 Replies
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Yes, it’s safe for hair.
A pH that low will open up more options for effective preservatives. You still need a preservation system. -
@Perry thank you for your response. What preservatives would you recommend? I’m trying to stay away from any ingredients that could be considered “harmful”.
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All Cosmetic ingredients are considered safe. That is a marketing misnomer. -
@Microformulation - and all ingredients are considered unsafe depending on the exposure concentration and route.
It is illegal in the US and around the world to sell unsafe cosmetic products. If a company is using a raw material, they are using it in a manner that is considered safe.
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If you are using cationic system, 4.0 - 4.5 is usually the best range to go. And it is safe.
And all cosmetic ingredients that are allowed in cosmetics products are considered safe if used within their regulatory limits and used as meant to.
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Thank you all for your response!
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