Retin-A first then Bleaching Cream? Or Bleaching Cream then Retin-A?

My dermatologist gave me a "Tretinoin Cream(Retin-A)" & "Bleaching Cream Forte" for my bedtime regime due to acne problems. I just forgot to ask if which cream should I put first on my face before I go to bed. Is it the Tretinoin Cream first then the Bleaching Cream Forte? Or the other way around? And question #2 if it's okay to put it after one another?

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