It can restore youthful skin, firm the skin and restore its elasticity. It can help demonstrate your glamour from inside to outside.

重现青春美肤，紧实肌肤并恢复润泽弹性，让您有内而外散发动力魅力！

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This treatment helps tone the body, firm up muscles and tighten the skin.

这种治疗可以帮助保持体态，使肌肉变结实、皮肤紧致。

《柯林斯英汉双解大词典》

Vitamin C is essential for your body to make collagen, the protein that keeps skin firm and elastic.

维生素C是身体合成胶原所必须的物质，胶原蛋白能使皮肤紧致有弹性。

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Many women will also notice that once firm skin is now sagging, a result of facial fat pads shifting under the skin.

FORBES: Woman Guide To Great Skin At Every Age

The firm plans to make its facial and skin analyses available as a cloud-based service, allowing for massive opt-in studies of human response to videos and websites.

FORBES: Magazine Article