I was introduced to Ling at a Denver area spa. Seven years later I am now a believer in Ling. My skin is extremely "temperamental" and sensitive, the smallest thing can set it off and I spend weeks trying to correct the issue. Additionally, I have eczema, cystic acne, and live in the upper Midwest with some extreme weather. I used this religiously for the last 18 months and my face has never felt and looked so healthy! I will never be without this in my skin care routine again if I can help it. I do not have near the number or severity of eczema and/or cystic acne flairs. That alone is just shy of a miracle. My face has never been so consistently healthy and glowing!