In particular, African Americans and dark-skinned individuals should consult with a qualified skin care provider before using laser skin treatments, deep facial peels, or invasive facial skin treatments that could cause scarring or side effects for dark skin.
And Educa Borras and Ravensburger have been competing to who has the biggest jigsaw puzzle in the world for the last 10 years. So one produced one of at 8,000, and then the other produced one at 10 and then at 12.
mystery, problem, enigma, riddle, puzzle mean something which baffles or perplexes. mystery applies to what cannot be fully understood by reason or less strictly to whatever resists or defies explanation. the mystery of the stone monoliths problem applies to a question or difficulty calling for a solution or causing concern.