I'm in my late 20s with internal dryness and flaking. Which should I get first, a skin booster or LDM?

Hello! I'm an office worker in my late 20s.

My skin has become extremely dry lately as the weather has suddenly turned cold in the mornings and evenings. My cheeks feel tight just a minute after washing my face, and by the afternoon, my makeup cakes and dead skin cells start flaking around my nose and mouth. It feels shiny on the surface but dry underneath, so even reapplying cream only provides temporary relief.

For home care, I apply moisturizing cream twice and use a sheet mask once a week, but it definitely isn't the same as before, so I'm considering getting a professional treatment before this winter.

I looked it up and saw that Skin Boosters and LDM Waterdrop Lifting are frequently mentioned for internal dryness. I'm wondering which one would be right for me first.

1) If inner dryness and dead skin cells are the main concerns, which would you recommend first, a skin booster or an LDM?

2) If it is the first time, how many sessions are usually received, and at what intervals?

3) Will it interfere with going to work immediately after the procedure? I am also curious about how long the redness lasts.

4) Are there any home care products that are good to use alongside the treatment, or products that I should avoid?

My skin is on the sensitive side, so I'd like to manage it step-by-step rather than getting something too strong right away. If anyone has received treatments with similar concerns, please share your experiences or consultation tips!