Secret Key Sparkling Lemon Peeling Gel (120ml for $7)
Having tried numerous peeling gels, I can definitely say that this one takes number 2 on my list... From the bottom. Super weak. Barely does anything, and yet, the worst one is still the Missha Aqua one.
Secret Key Starting Treatment Essence (155ml for ca. $18 on eBay)
The brand claims that this product has 94% of galactomyses ferment filtrate, which is a yeast byproduct of the sake industry. I love a good fermented first/starting treatment essence. However, it is an absolute mistake to try this product after trying Missha's first treatment essence. Nothing compares to it, sorry, that means even you, Secret Key.