Using tretinoin 0.025% as an anti-aging maintenance treatment is common and generally effective. Here are some key points to consider:

• Effectiveness: Tretinoin helps improve skin texture, reduce fine lines, and promote collagen production, which are beneficial for anti-aging.

• Concentration: 0.025% is a mild concentration, suitable for maintenance and for those with sensitive skin or new to tretinoin.

• Usage: It is usually applied once daily, preferably at night, and should be introduced gradually to minimize irritation.

• Side Effects: Some people may experience redness, peeling, or dryness initially, which often improves with continued use.

• Sun Protection: Using sunscreen (SPF 30 or higher) daily is essential, as tretinoin can increase skin sensitivity to sunlight.

• Consultation: It's best to discuss with a dermatologist to ensure tretinoin is appropriate for your skin type and to get personalized advice.

If you decide to use tretinoin, start slowly and monitor your skin's response. With proper use, it can be a valuable part of your anti-aging skincare routine.