Should I use tretinoin and hydroquinone?

Hello,
In our experience, topical products do not work well for sun spots and freckles. We rely on a laser that has the power and precision to target conditions with cells of dark color. Alternatively, we do not believe that lasers should be used to treat melasma due to the high failure rate, cost of treatments, and the likely possibility of the condition rebounding worse than baseline. For melasma - we rely on 8% hydroquinone as lower percentages do not work well in our practice for this stubborn and chronic condition.
Retinoids have been known to help with pore size through the exfoliation process, but it's usually an uphill battle. We prefer retinoids for anti-aging purposes such as prevention of lines, wrinkles etc.
Hydroquinone does not have any benefit for pore size or wrinkles - only brown discoloration.

You may want to schedule a consultation with a practice that specializes in "cosmetic dermatology" to have a treatment plan that offers the correct technology or product for the condition(s) you have.

In summary:

Melasma - 8% hydroquinone without retinoids
Sun spots, freckles - Q switched YAG lasers
Pore size - laser resurfacing or Quantel Aramis laser w/ or w/out retinoids

Thank you for your question, Melasma needs a combination approach to get the best improvement and will need a series of treatments. In our practice, we combine Clear + brilliant, peels, microneedling(/RF)/PRP, aerolase, and sometimes erbium laser (coollaser) to get the best results. See an expert for a formal evaluation. Best, Dr. Emer

Thanks for your question.  The first thing you need to do is see your board certified dermatologist for a skin check, to make sure all the brown spots are normal age spots and don't look suspicious.  You wouldn't want to ignore a pre-cancer or an actual melanoma.  If your dermatologist is satisfied that your skin is just sun damaged and you have melasma, they will help you find the right regimen, probably including both tretinion (retin-a) at night, and hydroquinone 4% either also at night, or in the morning under your good quality sunscreen. The most important part of your beauty routine, regardless of whatever else you do, is wearing sunscreen, since the brown spots will certainly get darker with time and sun exposure.  See a dermatologist in person, who is trained in the health and beauty of the skin, be aware of their credentials and shy away from anyone just trying to sell you products without knowing if you have any suspicious lesions on a very sun damaged face.  Best of luck!