Skin Toning For Less Visible Veins?

My friend is 39 year old her skin is very sensitive and she has veins. Whenever she uses any skin care product that tones her. Her veins will be more visible and her skin less attractive. She wants to tone although she is fair maybe due to age her fairness is not bright enough . How can she achieve beautiful skin again without any side effect. Can you recommend the best skin care product for her or home remedy.

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