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Benzophenone-4 Alternative
Hi All,
We are currently using Benzophenone-4 as a colour protector in hand washes, but are facing a shortage of the same.
Is there an alternative we can use? The main aim is just to keep the colour from fading.
Thanks,
Zeeshan
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1 Reply
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You could use other benzophenones instead.Benzophenone-3 shouldn’t be a problem because it’s use in hand washes and photosensitisation won’t be an issue. It’s unfortunately commonly regarded as ‘bad’.Benzophenone-5 is the sodium salt of BP-4.Use a different sunscreen UVA filter such as diethylamino hydroxybenzoyl hexyl benzoate, butyl methoxydibenzoylmethane, or bemotrizinol.Try ferulic acid: It doesn’t absorb as good in the UVA range and is less stable than common UV filters but it’s natural.Use a different bottle material which is less transparent for UVA (polycarbonate, polystylrol, or plastics with additives).Try without any BP-4 and see if you still get photobleaching.Use chemical protection such metabisulfite.
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