Because of the
protein purification technology used
to produce collagen in the past, occasionally
there would be allergic reactions
like redness in partial areas. We
currently use the products of Japan
Koken Biotech Company that is known
for good quality products. The products
have also passed the Department of
Health inspections, so the quality
and the effectiveness are ensured.
Of course if you have a high allergy
body type, we recommend an anti-allergy
test before injection, or choosing
another type of hyaluronic acid for
injection.
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