Lot · Soap Bases
OPTIPHEN Plus Natural Preservative (4 oz) Paraben-Free; Formaldehyde-Free
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Fri · May 22, 2026
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ZIP 120**
floatingstone
1,604 ratings · 99.20% positive
Description
From the sellerOptiphen Plus performs best in formulations below 6.0 pH, but is also proven effective at pH levels above 6.0. Usage rate: 0.75%–1.5%.
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