Hygienic packet [SEP] I love these are individually packaged so every time you open, it's fresh and very hygienic.<br />One packet have generous amount of serum in it and you can use not only for your face but also your neck<br />and hand. or you can use one packet in the morning and at night, I'd say one packet is for 2 times use instead of once.<br />It's gel watery feeling serum and not oily or sticky at all which I love.<br />It makes my skin very hydrate, calm and it doesn't bother even if you wear makeup afterwards.<br />Overall, I really love this serum and recommend!