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Combining tretinoin with minoxidil may improve absorption by exfoliating the scalp, but results vary. Users suggest starting with low frequency to avoid irritation, and some recommend additional treatments like finasteride or microneedling.

Smoking infrequently is unlikely to significantly impact hair loss or health, especially when using treatments like finasteride and minoxidil. Genetics play a larger role in hair loss, and low smoking frequency is not considered a major risk.

The user experienced hair shedding after starting testosterone replacement therapy (TRT) and is considering using DHT blockers like finasteride or dutasteride to address potential DHT-related hair loss. Low ferritin levels due to frequent blood donations may also contribute to hair issues, and the user is working on stabilizing iron levels.

Low-dose oral minoxidil is used for hair loss and does not significantly affect blood pressure but may increase heart rate and cause hypotensive symptoms. Some users experience side effects like palpitations and shortness of breath, while others find it effective; topical minoxidil with tretinoin is also considered.

Low doses of dutasteride are as effective as higher doses for hair regrowth, with fewer side effects. Users find success taking it 2-3 times a week instead of daily.