Perma Rite #4 and Perma Rite #9PLUS are known as hard bonds. They become hard when dry and will not detach from the hair until cut out. Once applied on
a graft, position immediately. Apply 5 to 10 minutes of even pressure for thorough bonding. Hard bond adhesives are recommended for those clients who are
extremely oily, very active, or when other attachments do not meet expectations.
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