What areola bleaching cream is the best and are there any permanent ones?

Difficult to bleach: Unlike the anus where pigmentation may be due to products of digestion and inflammation, the areola tends to get its pre-lactation color form the underlying vascular supply (like the lips). It is truly difficult to bleach the redness out. Only if the dark color is due to melanin (rare until after pregnancy) can the color be bleached with products that interfere with melanin production.