Do you need sunscreen when using a retinoid?
Yes — daily SPF is non-negotiable with a retinoid. Retinoids increase photosensitivity, so skipping sunscreen worsens UV damage and hyperpigmentation and cancels the anti-ageing benefit. Use broad-spectrum SPF 30 or higher every morning.
Why
Retinoids increase photosensitivity by accelerating cell turnover, leaving fresher, less UV-protected skin at the surface. Using a retinoid at night without broad-spectrum SPF the following morning significantly increases UV-related damage, hyperpigmentation, and counteracts the retinoid's anti-ageing benefits.
What to do
SPF (minimum SPF 30, broad-spectrum) is non-negotiable the morning after any retinoid use. This is not optional — it is the single most important companion behaviour to a retinoid routine.
Good to know
This is a behaviour warning, not a product-to-product conflict. It should surface when a user logs a retinoid in their PM routine but does not have SPF in their AM routine.
Sources
SkinMama provides skincare information for educational and cosmetic self-care purposes only. It is not medical advice and does not diagnose, treat, or replace a dermatologist. For a medical concern, consult a qualified professional.