★★★★★
I have finally found something that works: A one part to one part solution of onion juice and ACV. I found the recipe on the internet: just put some onion in the blender (I used a garlic press) to get some juice going. Add an equal amount of ACV to the onion juice.
Every evening, I've been pouring about 1 - 2 teaspoons into a little dish and applied it to affected areas with a cotton swab repeatedly until the juice is used up. This takes 10 - 20 minutes. After several days, I used the vinegary onion pulp as a facial mask - left it on for about 20 minutes.
It's been maybe 4 weeks and most stubborn brown spots have faded really nicely. The onion juice apparently helps lift the darkened areas off - and it has vitamin C in it - which seems like an overall healthy thing to be putting on your skin. I bought my second onion a couple of days ago and am looking forward to even an even clearer complexion!