What Is It: An Aura Essence with Spot Resist Complex and Pitera, this targeted essence tackles age spots with precision, leaving skin looking brighter. It tackles age spots with precision, leaving skin looking brighter. With a new, specially designed auto-fill dropper, one full drop will provide the optimal dosage for best results.sk-ii's latest research discovered that even little to no Uv exposure can result in visible age spots and darker skin tone over time by producing excess melanin and invisible spots. This discovery has inspired the launch of Sk-ii's GenOptics Spot Essence, Sk-ii's latest spot reducing serum to reduce the appearance of spots, created with the new formula Spot Resist Complex.GenOptics Spot Essence contains Pitera in every bottle. Pitera is a clear liquid rich in vitamins, amino acids and minerals that works together to allow the skin's natural surface rejuvenation process to function at its prime. This unique ingredient was discovered over 35 years ago and remains essentially unchanged until even today. Impossible to create artificially, Pitera is the perfect element to improve the skin´s natural surface rejuvenation process.