The time machine.
Effective Dose
0.1% - 1.0%
Onset
2-4 weeks
Cost
Budget
Cycle
As needed
7 things you need to know
What it does
The time machine.
Worth it?
10/10. The absolute gold standard of dermatology.
How much to take
0.1% - 1.0%
Price
Cheap (under $15/month)
How fast it works
Takes 2 to 4 weeks to notice
Safety
Check if: irritating initially. do not use if pregnant., pregnancy.
What people say
Tightness / Peeling (at first).
VITAMIN
"Tightness / Peeling (at first)."
Research backing for this ingredient
Multiple high-quality studies confirm efficacy
65+
Yes
Strong agreement among researchers
Reduces fine lines and wrinkles via collagen stimulation
Multiple RCTs and In-vivo Biopsy Studies
Improves skin texture and hyperpigmentation
Randomized, double-blind, vehicle-controlled trials
Increases epidermal thickness
Comparative human clinical studies
"The absolute gold standard of dermatology."
Retinol is a vitamin with established biological activity.
Products below minimum dose are likely ineffective
When
Any time
How
0.1% - 1.0%
Food
With or without food
Long-term benefits over weeks to months
As needed
Check for specific interactions.
Retinol is categorized as a vitamin.
Scientific consensus score: 10/10.
Evidence quality: STRONG.
Add Retinol to your stack analyzer or compare it with other ingredients.
Not medical advice. Always consult a healthcare provider.