PEPTIDES VS. RETINOIDS; WHICH ANTI-AGEING INGREDIENT DOES YOUR SKIN NEED?
"In the world of high-performance skincare, two ingredients dominate the conversation: Retinoids and Peptides. They are the heavyweights of the "pro-aging" category, yet I find they are also the most misunderstood." - Dr. Laura
Dr.Laura is asked in clinic almost every day "Which one is better?" or "do I need both?"
The truth is, they aren't competitors; they are colleagues with very different job descriptions. The right choice depends on your skin, your goals, and sometimes where you are in life.
Here is everything you need to know about the Peptides vs. Retinoid debate, and how to choose what your skin needs right now.
We've said it before, we'll say it again; retinoids are the GOLD standard of skincare. If skincare had a hall of fame, retinoids (vitamin A derivatives) would be pride of place. As one of the most rigorously researched ingredients in dermatology, their reputation is earned.
THE MECHANISM
They work by encouraging the skin to renew itself more efficiently and behave more like younger skin.
They are known for their results on;
- Fine lines & wrinkles
- Acne
- Uneven pigmentation
- Rough or uneven texture
However... with great power comes the potential for irritation. Retinization, the process of the skin adjusting to Vitamin A can involve dryness, peeling and/or sensitivity. This is why we always recommend a "low and slow" approach, paired with a sophisticated barrier builder like Medik8 Advanced Night Restore.
THE POWER OF PEPTIDES
Peptides work very differently.
While Retinoids are corrective, we view Peptides as supportive. Peptides are short chains of amino acids that act as "signalling molecules." They tell your skin to produce more collagen, but they do not increase skin cell turnover.
You can think of them as supportive rather than corrective.
THE MECHANISM
Peptides don’t force cell turnover. Instead, they tell your skin to stay firm and resilient. They are the ultimate team players in a long-term skin health strategy.
They're useful for;
- Maintaining skin quality
- Supporting firmness
- Sensitive skin
- Pregnancy safe routines
They are generally very well tolerated and can be used consistently without irritation.
They are slower and steadier than retinoids.
Primary Goal: Cellular Renewal & Correction
Intensity: High (with potential irritation)
Best for: Wrinkles, Acne, Pigmentation
When to use: PM routine
When we recommend them: Almost always
When to avoid: pregnancy, repairing barrier
Primary Goal: Structural support & firmness
Intensity: Low, generally well tolerated
Best for: Firmness, skin quality, sensitivity
When to use: AM and/or PM
When we recommend them: pregnancy, as additional step once routine is solid
When to avoid: if you don't have a Core 4 routine
Absolutely.
Peptides aren't a part of my Core 4 approach to skincare routine building, but retinoids are almost always a non-negotiable.
However, if you have your Core 4 locked in and you want to level up your routine, peptides is a very sensible next step.
This is not really about choosing one over the other.
If your skin tolerates retinoids and you are not pregnant, they remain one of the most effective ingredients we have for long-term skin health.
Peptides have their place too, particularly when skin is sensitive or when vitamin A products are paused.
The important thing is choosing what works for your skin at that moment.
Good skincare is rarely about trends. It is about context.
