Can ambi daily moisturizer help with dark circles under the eyes?

Possibly: Dark circles are increased pigmentation often from cycles of swelling, from rubbing or allergies, and from and increased concentration of skin due to looseness of the skin in that area. The ambi product or the fading version may slowly help to reduce pigmentation and even the skin tone, but remember the lid skin is very sensitive and prone to allergic dermatitis, which would worsen the circles