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Best eczema safe 100% water soluable preservative ecocert
Looking for recommendations for eczema safe preservative for a 100% water based formulation. Preferably ecocert or at least non formaldehyde releasing. I tried PE 9010, it was a disaster.
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4 Replies
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Considering this:
NeoDefend
(GeoGard Ultra, MicroGuard)
Gluconolactone (and) Sodium Benzoate-
It depends on what else is in your formula but that might work if you keep the pH at 5.0 or lower.
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Yup I try to keep all of my skin and hair products under 5. When I tested the pH they all reanged from just above 4 to 4.6. I’m not sure about other skin and hair types but the closer to 4 the shiner my hair and clearer my skin is.
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Pretty weak system that would require protective packaging and high level of manufacturing hygiene attention. Has a real Gram neg weakness Gluconolactone breaks down to gluconic acid - think I’d use EDTA.
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