Medik8 Crystal Retinal 24 30ml high strength retinaldehyde serum bottle
Medik8

Crystal Retinal 24

Out of stock

A higher-strength retinal for established retinoid users.

£68.85

£81

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Find where this fits in your AM / PM routine.

Find my routine
fine lines & wrinklesageing

Best for

Anyone already using a retinoid comfortably who wants to progress. Not a starting point for someone new to vitamin A.

How to use

Apply a small amount to dry skin at night. If moving up from a lower strength, start at two or three nights a week and rebuild tolerance rather than assuming it carries over. Follow with a moisturiser. Sunscreen every morning.

What to expect

Some renewed dryness in the first one to two weeks as your skin adjusts to the higher strength, even with prior retinoid use. Continued improvement in texture, fine lines and tone with consistent use.

Skin type suitability

all

Key actives

Retinaldehyde 0.24%Hyaluronic acidVitamin EGlycerin

Size or volume

30ml

Time of day

PM

Evidence level

Well established

The same single-step conversion pathway as Crystal Retinal 10, at a higher concentration, with a substantial body of evidence for photoageing, texture and acne at this strength.

This level reflects published research on the key ingredients or product class. It does not mean this exact formulation has been independently proven, and it is not a medical endorsement or a guarantee of results.

What this means →
Also stocked: Crystal Retinal 10 (0.10%)View →

Reviewed against the Serenova Standard

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Strengths stocked at Serenova

Serenova currently stocks Crystal Retinal 10 (0.10% retinaldehyde) and Crystal Retinal 24 (0.24%). If you're considering moving to a higher strength, use our Skin Quiz or speak to our pharmacy team for guidance based on your current routine and experience with vitamin A.

Frequently asked

Who is Crystal Retinal 24 for?
Anyone already using a retinoid comfortably who wants to progress. It is not a starting point for someone new to vitamin A.
How do I use it?
Apply a small amount to dry skin at night. If moving up from a lower strength, start at two or three nights a week and rebuild tolerance rather than assuming it carries over. Follow with a moisturiser. Sunscreen every morning.
What should I expect when stepping up?
Some renewed dryness in the first one to two weeks as your skin adjusts to the higher strength, even with prior retinoid use. Continued improvement in texture, fine lines and tone with consistent use.

Crystal Retinal 24

£69