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Tretinoin Strengths & Percentages Explained with Charts

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Tretinoin is a prescription-strength retinoid used for acne, wrinkles, and dark spots. It comes in various strengths, with percentages ranging from 0.01% to 0.1%. The required tretinoin strength will depend on an individual’s skin needs.

Retin-A is a brand name for tretinoin, and its strength varies with the type of formulation.

Retin-A cream is available in strengths of 0.025%, 0.05%, and 0.1%, while Retin-A gel is available in strengths of 0.01% and 0.025%.

Tretinoin gel tube.

In this post, you will find everything about different tretinoin percentages, formulations, and tretinoin strength charts summarizing the details.

What is tretinoin?

Tretinoin is a retinoid or vitamin A derivative (also called all-trans-retinoic acid). It is a strong medication and can only be obtained by prescription from a doctor. This is the active ingredient meaning it doesn’t need any conversion in our skin cells for it to become effective.

In contrast, over-the-counter retinoids like retinol or retinaldehyde need help from our skin cells to get converted to the active form (tretinoin) to be effective. 

Benefits

Tretinoin can help us with multiple skin problems. Once applied to the skin, tretinoin affects the genes responsible for cell differentiation. In simple words, it increases the turnover of our skin cells.

This prevents the buildup of dead skin cells on the skin’s surface.

Tretinoin is often used for:

  • Acne: It prevents the clogging of pores with dead skin cells, decreases inflammation, and improves skin texture.
  • Fine lines and wrinkles: It can protect collagen (the main protein that supports our skin). In addition, it can stimulate the formation of collagen.
  • Hyperpigmentation: It can decrease the enzyme tyrosinase which forms melanin pigment. It can also fade dark spots by increasing cell turnover.

Side effects

It is an effective ingredient but it can also lead to several side effects. This includes dryness, redness, burning, stinging, peeling skin, purging, or increased acne breakouts.

Most of the side effects subside as our skin adjusts to it. Using gentle skincare along with tretinoin can also help in minimizing any side effects due to tretinoin.

Purging due to tretinoin occurs for 4-6 weeks. In some cases, it can last up to 3 months. Purging occurs due to increased cell turnover. 

Tretinoin strengths

Tretinoin comes in different formulations, strengths, and delivery systems. Tretinoin strength usually ranges from 0.01 to 0.1%. The highest strength of tretinoin that is prescribed is 0.1%.

Sometimes, tretinoin at 0.01% and 0.25% percentages are considered broadly as lower strength formulas while 0.05% and 0.1% percentages are considered as higher strength formulas.

Below you will find several brands with different tretinoin percentages.

1. Retin-A

Retin-A comes in two forms:

  • In gel form, Retin-A strengths are 0.01% and 0.025%.
  • In cream form, Retin-A comes in 0.025%, 0.05%, and 0.1% strengths.

2. Renova

This brand comes in a cream version with 0.02% tretinoin strength. It can be used for the improvement of fine facial wrinkles along with good skincare and sun avoidance. 

3. Avita

This comes in a cream version with a 0.025% tretinoin percentage.

4. Retin-A Micro

Retin-A micro uses a unique microsphere or micro sponge technology to protect tretinoin and make it more stable. In addition, tretinoin is released slowly decreasing potential side effects.

It comes in various strengths: 0.04%, 0.06%, 0.08%, and 0.1%.

5. Atralin

This is a gel formulation that has micronized tretinoin. It is more stable and tolerated better. It comes only in 0.05% tretinoin strength. 

6. Altreno

This is a lotion with an emollient base. It has micronized tretinoin at 0.05% strength.

7. Combination formulations

Tretinoin has also been combined with several other active ingredients like antibiotics, steroids, benzoyl peroxide, etc.

  • Twyneo: This was recently added to the family. This is the first formulation that combines tretinoin and benzoyl peroxide. Tretinoin can be deactivated by benzoyl peroxide but this cream uses microencapsulation technology to keep both ingredients safe. It has tretinoin at 0.1% and benzoyl peroxide at 3% concentration.
  • Ziana: This contains a combination of tretinoin (0.025%) with an antibiotic – clindamycin (1.2%) in a gel base. It is used for acne.
  • Veltin: This is also a combination of tretinoin (0.025%) and clindamycin (1.2%) in a gel base. It is used for acne.
  • Tri-Luma: It is a triple combination of tretinoin with a steroid and hydroquinone (a potent medication to inhibit the enzyme tyrosinase which makes melanin pigment). It has tretinoin (0.05%), fluocinolone (0.01%), and hydroquinone (4%) in a cream base. It is used to treat melasma.

8. Compounded medications

In addition to all the brand medications with tretinoin, your doctor may prescribe a generic form of tretinoin. In some cases, the percentage is tailored according to the needs of a specific individual. It may be combined with other active ingredients too.

There are several online systems like Curology, Apostrophe, Dear Brightly, and so on, which can give custom formulas with tretinoin. 

However, for all tretinoin strengths, you will need an online or in-office consultation and prescription.

Charts

In the tretinoin strength chart below, you will find different tretinoin strengths available from various brands. The tretinoin percentage ranges from 0.01% to 0.1%. 

Tretinoin strength chart.
Tretinoin strength chart of combination medications.

You can also get tretinoin in combination with other active ingredients like clindamycin, benzoyl peroxide, steroid, etc. These combinations treat one or the other skin concerns. Tretinoin in any form requires a prescription.  

Tretinoin strength for wrinkles and photodamaged skin 

There are multiple studies (1, 2, 3) where tretinoin was used at a concentration of 0.02% and it was found to be effective in improving photodamaged skin (fine and coarse wrinkles, hyperpigmentation, and skin yellowness).

Some of these studies also examined histologic changes, meaning skin was examined under the microscope to see the benefits of tretinoin.

One study compared different strengths of tretinoin ranging from 0.001% to 0.1%. It was found that daily application of tretinoin at a concentration of 0.02% was effective in improving fine and coarse wrinkles. However, at a concentration below 0.02%, it was not more effective than a plain vehicle.

In simple words, tretinoin at a concentration of 0.02% and above may be beneficial for photodamaged skin and wrinkles.

What strength should you use?

Tretinoin strength will depend on your skin type and the skin condition it is used for. Your doctor will decide which is a suitable strength for you.

Usually for someone with sensitive skin or someone who is new to tretinoin, a lower-strength tretinoin is prescribed.

In addition, the vehicle is also important. Retin-A micro and micronized tretinoin are tolerated better.

When to increase tretinoin strength? 

It is often thought that if tretinoin is not causing any side effects or peeling skin, it is not effective. However, this is not true. Not everyone experiences the same side effects. 

In addition, it takes time (in a few cases 6 months to a year) to see visible results from the use of tretinoin. So, give your medication some time to show results.

However, if you are not seeing your desired improvement in acne or wrinkles, it is best to check with your doctor.

They can review your medication and make any changes or increase strength if necessary.

Highest over-the-counter retinoid concentration

Adapalene is a retinoid just like tretinoin. A 0.1% concentration can be obtained over the counter in the USA. A few years back it was only available with a doctor’s prescription. 

However, now you can get it over the counter. A higher concentration of 0.3% is available only by prescription. This can be beneficial for acne, hyperpigmentation, and photodamaged skin.

Adapalene is available under the brand name Differin.

In addition, of all the retinoids which convert to tretinoin, retinaldehyde is considered the one closest to tretinoin. The reason is: it needs just one step of conversion to tretinoin. 

In most areas, 0.2% retinaldehyde is the highest you will find in any over-the-counter product. (This can vary depending on different geographical areas). 

Read more: Best retinaldehyde products

Highest over-the-counter retinol concentration

It is difficult to determine the highest strength of over-the-counter retinol because many brands do not clearly give out the exact percentage of retinol in a product. 

Retinol is a very sensitive ingredient. So, there’s no way to tell how effective a product with retinol is.

Summary

Tretinoin is a vitamin A derivative and is available only by prescription. There are several brands and you can get them in a gel, lotion, or cream base.

Tretinoin comes in various strengths ranging from 0.01 to 0.1%. The strength of tretinoin prescribed will vary from person to person depending on one’s skin sensitivity and concerns. In some cases, it can be compounded based on an individual’s needs.

Read more articles on retinoids:

References

Disclaimer: This blog post is for information purposes only and does not replace medical advice.

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2 thoughts on “Tretinoin Strengths & Percentages Explained with Charts”

  1. Joyce

    I think you have a typo. In the tretinion strength chart, you show the second level of concentration as 0.5%. It should be 0.05%.

  2. Jaspreet Oberoi, MD

    Hi Joyce,
    Thanks you so much for taking the time to let me know. It should be 0.05%, that’s a typo. I replaced the image, it should update in few hours. Thanks again!!

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