Ok so I have Personna Lab Blues, Crystals, Pearonna Med Prep and Personna Platinum Chrome....I only have experience with the “traditional” lab blues and still to try the others, all are Personna or made by Personna. The Labs and Med Preps are US made while the others are made in Israel as listed on the packs...similar? Not so much? I also have a tuck of Reds under another name...so confusing...
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