What were the earliest forms of serums?

Apply facial serums after cleansing and toning and before moisturising. Once your face is clean and balanced, a serum can then effectively do its job, whether ... Serum free light chains, not urine specimens, should be used to evaluate response in light-chain multiple myeloma. Dec 9, 2024 ... But, by making a few simple changes in your skincare regime will make a huge difference. So what are the skincare must-haves for 30+ skin? Note ... Do not use this with Olay retinol 24, even though the description claims that it pairs well. The sacylic acid in this and retinol in the other will burn and dry ... May 29, 2022 ... ... should apply it after the moisturizer coz it's a face oil. Upvote ... I have crazy oily skin so I use the HA serum with a water gel ... It adds shine as well. I have very long, thick hair and this hair oil does not weigh it down at all. After my hair is dry, I do apply just the ... What time of day should I use The Ordinary products? Again, this depends on the product. As an example, apply products containing Vitamin C in the morning and ... Sep 28, 2021 ... There are 5 different formulations right now that are named after their hero ingredient: Collagen, Retinol, Glycolic Acid, and we recently launched Tranexamic ... Aug 9, 2022 ... When Should You Apply a Serum? ... Some serums can be applied both morning and night, while others are better applied only once daily. Here's how ... Sep 15, 2020 ... You can use a face serum once or twice a day after cleansing and toning your skin. Think of it as the step after you clean. How often you apply ...