Day One: It doesn't sting at all, but after my whole routine my face was quite warm. I used with Beauty of Joseon Ginseng Essence and their Glow Serum, plus the PDRN100. To finish I used the Hyaluronic modeling pack and just the plain QV moisturiser with ceramides.
Day Two: The same as the day before but I also used a Hyaluronic Acid mist after the modeling pack as the mask can be difficult can get the little bits off. Waking up in the morning, my face felt plump - I could feel the difference before I looked in the mirror. When I did peek, my skin was glowing and juicy. I could feel a little of a tingle today.
Day Three: Tonight. Today, the same as yesterday but with Idebenone + Blackberry Complex Serum and the Cica modelling pack. I also used the Madagascar Centella Soothing Cream. The cream did not play well with the rest of my routine. I really felt the tingle today - but no stinging. I'm not sure if it's the Soothing Cream or the modelling pack, as this time the mask was harder to remove. There was more redness tonight.
I am enjoying using this product and will continue to do so, especially once I find the best routine to go along with it.