What is the best collagen care cycle?

The weather is sunny and nice these days, but my skin looks gloomy.

I became very interested in collagen care as a solution for managing skin elasticity and fine lines. I heard that collagen care helps improve overall skin condition by promoting collagen production deep within the skin, and I was curious because I heard that consistent treatment actually makes the skin feel firmer.

I've seen many reviews saying that collagen care helps those concerned about dryness or loss of elasticity. Is that true?

However, since collagen care is known to yield gradual improvements with repeated sessions rather than dramatic changes after just one treatment, I am concerned about the appropriate frequency. Getting treatments too frequently is a burden in terms of both time and cost, but doing them too sporadically might cause the effects to diminish.

I understand that the frequency of collagen care usually varies depending on skin condition, but I am also curious about what the appropriate interval is on average.

If anyone has tried collagen care, it would be a great help for me to refer to it if you could share your experiences, such as the recommended treatment frequency, actual changes after the treatment, and the duration of the results!