Tretinoin

Pros

• Highly effective for stubborn acne, closed comedones, and milia
• Visible improvement in fine lines, 'crows feet,' and overall skin texture
• Fades hyperpigmentation and provides a noticeable 'glow' after the initial adjustment
• Often more affordable than high-end cosmetic retinoids when purchased as a generic or over-the-counter in certain regions

Cons

• Frequent 'purging' phase where acne may worsen for weeks or months before improving
• Causes significant skin peeling, dryness, and irritation, especially in the first two months
• Increases sun sensitivity, making daily SPF use an absolute requirement to avoid skin damage
• Can severely compromise the skin barrier if used too frequently or without adequate moisturization

Caveats

• Results are cumulative and slow; many users do not see significant changes until the 6-month mark
• The 'purge' can be discouraging enough that some users discontinue treatment before seeing benefits
• Requires a prescription in many regions, though users frequently discuss sourcing it over-the-counter abroad

Best for

• Long-term anti-aging and fine line reduction
• Treating persistent acne that has not responded to over-the-counter products
• Users who can commit to a strict daily sunscreen and moisturizer routine

Avoid if

• You are unable or unwilling to wear high-SPF sunscreen every day
• You have an already compromised or extremely sensitive skin barrier
• You need immediate results for an upcoming event and cannot risk a purging phase