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We advise that Medik8 Retinol products be used under the guidance of a skin care professional.
Medik8 has created three essential retinol products; two for the face and one for the under-eye area. Retinol 3 TR is applied directly to the face underneath your moisturiser. Retinol 40 Boost is mixed with your moisturiser before application to the face. Finally, Retinol Eye TR is applied directly to the under-eye area.
Retinol Eye TR | Retinol 3 TR | Retinol 40 Boost |
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To build up skin tolerance to retinol, allow 3 day intervals between applications for a minimum of 2 weeks. We advise that Medik8 Retinol products be used under the guidance of a skin care professional.
DO NOT USE IF PREGNANT, LACTATING, UNDERGOING SKIN PEELING PROCEDURES OR TAKING PRESCRIPTION MEDICATION FOR ACNE.
Avoid contact with the inner eye area, if irritation occurs, rinse thoroughly with water and contact a skin care professional or your
GP immediately. Wash hands thoroughly
after use.
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Professional Strength Under-Eye Night Serum

Frequency of use
Apply every 3rd day* for the first 2 weeks.
Apply every 2nd day* from week 3 onwards.
IMPORTANT:
*This is the minimum amount of time recommended in between Retinol Eye TR applications. As with any retinol product, you should only decrease the time between applications when your skin has adjusted to the previous dose.
If prolonged redness or irritation occurs, reduce the frequency of retinol applications until the redness subsides.
Avoid contact with the inner eye area, if irritation occurs, rinse thoroughly with water and contact a skin care professional or your GP immediately. Wash hands thoroughly after use.
If prolonged redness or irritation occurs, reduce the frequency of retinol applications until the redness subsides.
Avoid contact with inner eye area, if irritation occurs, rinse thoroughly with water and contact a skin care professional or you’re GP immediately.
Directions:
Retinol Eye TR is to be used directly on the under-eye area.
| 1) |
Note that if using Pretox products, these should precede the Retinol Application Protocol.
In the evening, after cleansing, apply Dark Circles or Pretox Eyelift to protect the under-eye area from dynamic wrinkles,
shadows and unsightly puffiness. |
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| 2) |
Follow with an antioxidant product such as C-Tetra or CE-Tetra to the eye-area to ensure minimum irritation |
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Use the integrated spatula to apply one small drop of Retinol Eye TR under each eye; using your finger to blend in. Alternatively, place a drop on your finger and then blend in to the under-eye area. |
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Finish your Retinol Eye TR protocol with the application of Hydr8 or your preferred hydrator for optimum under-eye protection.
Retinol should not be used in direct sunlight. If using Retinol Eye TR in daylight, ensure that an SPF hydrator is applied after every use. |
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Professional Strength Advanced Night Serum (0.3% Retinol)

Frequency of use
Apply every 3rd day for the first 2 weeks*.
Apply every 2nd day for weeks 3-4*.
Apply every day from week 5 onwards*.
IMPORTANT:
*This is the minimum amount of time recommended in between Retinol 3 TR applications. As with any retinol product, you should only decrease the time between applications when your skin has adjusted to the previous dose.
If prolonged redness or irritation occurs, reduce the frequency of retinol applications until the redness subsides.
Avoid contact with the eye area, if irritation occurs, rinse thoroughly with water and contact a skin care professional or your GP immediately. Wash hands thoroughly after use.
Retinol 3 TR has been formulated for direct use upon the face.
Directions
Retinol 3 TR has been formulated for direct use upon the face.
| 1) |
Note that if using Pretox products, these should precede the Retinol Application Protocol.
In the evening, after cleansing, apply an antioxidant product such as C-Tetra or CE-Tetra to the face preceding the Retinol 3 TR application, to minimize irritation. |
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| 2) |
Use the integrated dropper to apply Retinol 3 TR directly to the face. Alternatively, place a drop on your finger and then blend into the skin. Retinol 3 TR can be applied to the face, excluding the under-eye area, or to target specific areas of concern. |
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Finish your Retinol 3 TR protocol with the application of Hydr8 or your preferred moisturiser for optimum skin protection. |
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Retinol should not be used in direct sunlight. If using Retinol 3 TR in daylight, ensure that an SPF hydrator is applied after every use. |
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Professional Strength Time Release Eye Booster Serum™ (4.0% Retinol)

Frequency of use (see dosage guide below)
Begin your regime by adding 0.2% Retinol 40 Boost to your hydrator (unless directed otherwise by your professional skincare consultant).
Application Cycle
Apply every 3rd day for the first 2 weeks*.
Apply every 2nd day for weeks 3 and 4*.
Apply every day for weeks 5 and 6*.
After completing the 6 week* cycle, ensuring that your skin is fully adjusted, you may wish to increase the retinol concentration by 0.2% or seek advice from your professional skincare consultant.
The 6 week* application cycle must be followed every time the percentage of retinol is increased.
IMPORTANT:
*This is the minimum amount of time recommended in between Retinol 40 Boost percentage increases. As with any retinol product, you should only decrease the time between applications or increase the concentration of each dose when your skin has become adjusted and is comfortable with more retinol.
If prolonged redness or irritation occurs, reduce the concentration of retinol being applied until the redness subsides.
Avoid contact with the eye area, if irritation occurs, rinse thoroughly with water and contact a skin care professional or your GP immediately. Wash hands thoroughly after use.
Directions
Retinol 40 Boost has been formulated to be mixed with Hydr8 or your preferred night hydrator.
| 1) |
If using Pretox products, these should precede the Retinol Application Protocol.
In the evening, after cleansing, apply an antioxidant product such as C-Tetra or CE-Tetra to the face preceding the Retinol 40 Boost application, to ensure that irritation does not occur. |
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2) Add Retinol 40 Boost into Hydr8 and mix in the palm of the hand before applying to the whole of the face.
See below table for exact dosage guide: |
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Dosage Guide
E.g. Number of pumps of Hydr8 + numbers of drops of Retinol 40 Boost = % of Retinol

Retinol should not be used in direct sunlight and is typically recommended for evening/nighttime. If using Retinol 40 Boost in daylight, ensure that it is mixed with an SPF hydrator such as Hydr8 SPF.
As you increase the dose of Retinol 40 Boost, ensure that you only increase by 0.2% (1 drop) at a time. You should wait three months* between each increase, to ensure that it does not irritate or cause any discomfort to your skin.
Medik8 recommends that once you have reached the 1% application level, you remain at this percentage for at least one year. If you have sustained your Retinol Boost 40 application at 1% for one year, and would like to increase your daily retinol treatment, Medik8 advises that you consult with your skin care professional prior to increasing your treatment.
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