Skin laxity refers to the loss of firmness and elasticity in the skin which causes it to appear loose, saggy, and less taut. This arises when the skin's natural support structures, like collagen and elastin, diminish, making it less able to bounce back from stretching or resist the effects of gravity.  Treatments such as polynucleotides (an injectable biostimulator), microneedling and skin boosters can help with laxity, brightening and tightening the skin.  These treatments can be used on the face but also on the neck and upper chest area where sun damage can accelerate the ageing process.