Injection hyaluronic acid with blunt needle or sharp needle

The main difference between a blunt needle and a sharp needle is in the position of the needle, which is round for a blunt needle and beveled for a sharp needle. Blunt needle will not Pierce the skin directly, need to open the skin, sharp needle is directly can Pierce the skin.
When injected in the face or elsewhere, the blunt needle does not damage the blood vessels, so it cannot be inserted into the blood vessels during the injection and cause a blockage. A sharp needle has a sharp end. That's a possibility. Relative to the parts rich in blood vessels, blunt needles need to be used for injection. If the parts of blood vessels are relatively few, sharp needles need to be used for injection, which can achieve a very safe protective effect. Sharp needle is more sharp, easier to enter the skin soft tissue, less resistance, less damage to the tissue. Recovery is faster, and it is generally believed that the pinhole has closed after 24 hours. But its disadvantage is that it is easy to puncture or puncture blood vessels. When hyaluronic acid or fat is injected, it is easy to enter the blood vessel through the needle injected into the blood vessel and cause embolism, blood supply disorders cause skin necrosis, even blindness, and enter the cerebrovascular and cause cerebral infarction. Blunt needle is difficult to break through the skin, often need a sharp needle to open the skin, then blunt needle injection, the risk of punctured blood vessels will be significantly lower, combined with some injection techniques, embolism complications will be very low. But blunt for skin damage is larger than sharp needle, recovery time is longer, generally believed to be at least 48 hours.
So beauty seekers should communicate with doctors according to their own conditions, choose these two kinds of needles.