I tried nearly every Paula's Choice toner, and Skin Recovery Enriched Calming Toner has been the one I keep going back to. It is a water-weight translucent liquid with a mild, natural (but fragrance-free) scent. My skin is normal to oily with dry areas, and I have found this toner to be more "normalizing" or "balancing" than products that are specifically marketed for that purpose. It has proven to be non-irritating, and in fact, is quite soothing to any sensitive areas I might have.
For the AM: I don't use this every morning. However, when I need a little extra boost of moisture, I apply with clean hands the first step after cleansing, and before BHA. When used in this way, the toner plumps my skin without being oily or heavy, and provides a delicate amount of hydration that enhances application of subsequent products.
For the PM: I use a small amount on a very thin cotton pad to remove traces of sunscreen and makeup leftover from cleansing, and to prepare my skin for subsequent treatments. Since I alternate Renova and AHA, which can be slightly irritating at times, the soothing quality of this toner is very welcome.
I waited a long time to review this product, comparing it thoroughly to other products and finishing one bottle over a period of around 9 months. I was skeptical at first that an enriched toner would make so much difference in my skincare routine, especially since my skin used to be a complete oil slick before I learned to use milder cleansers/toners in order to avoid overproduction of oil. Words can hardly do justice to how well this product works for me, but needless to say, it will be my go-to from now on.