What is the cheapest way to get tretinoin legally?

Short answer: get a prescription for generic tretinoin and fill it at a low‑cost pharmacy (or through an online dermatology service that includes the drug). That’s the cheapest legal route.

How to do that, step-by-step:

1. Get a legitimate prescription
   • See your PCP or use a telehealth/online dermatology service so you don’t need an in‑person derm visit. Services that commonly prescribe tretinoin include Curology, Hims, Roman, Apostrophe, PlushCare and GoodRx Care. Curology and Apostrophe offer personalized topical scripts that can include tretinoin; Hims/Roman tend to be cheaper for straightforward scripts.
2. Ask for the generic (tretinoin)
   • Generic tretinoin is far cheaper than brand names (Retin‑A, Renova). Ask the prescriber to write for “tretinoin (generic) 0.xx% cream/gel” and for the smallest effective quantity if cost is a concern. Also ask for samples if you see a dermatologist.
3. Price‑compare pharmacies and use discount tools
   • Check cash prices and coupons before filling. GoodRx and SingleCare show current pharmacy prices and coupons. Common low‑cost pharmacies to check: Walmart Pharmacy, Costco Pharmacy, Kroger, and some regional chains. Many people find generic tretinoin tubes for roughly in the teens to low tens of dollars with coupons (varies by strength/size/location).
4. Use insurance or mail‑order if you have coverage
   • If you have medical or prescription drug coverage, check your copay or mail‑order options (90‑day supplies can be cheaper under some plans).
5. Avoid unregulated sources
   • Don’t buy prescription tretinoin from unverified foreign websites, auction sites, or resellers — counterfeit or unsafe products are common.

Extra tips

• If you need a compounded vehicle (lower irritation, specific base), compare compounding pharmacy prices — sometimes economical, sometimes more expensive.
• If cost is the primary issue, mention it to the prescriber — they can prescribe the lowest strength or provide free samples.

If you tell me your country and whether you have insurance, I can suggest the best telehealth services or pharmacies to price‑check for you.