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The Best Tretinoin Cream Is Even More Powerful For Anti-Aging Than Retinol

As with all retinoids (the umbrella term for all vitamin-A derivatives), tretinoin helps regulate skin cell turnover, which can help prevent breakouts and reduce clogged pores. In addition to this, "it can also be used to treat existing breakouts and help to treat acne scarring," says New York board-certified dermatologist Carmen Castilla, MD.

It's also helpful for various signs of aging—for one, it can boost collagen production, which helps soften fine lines and wrinkles. And, "as it regulates skin cell turnover, it also works to improve the appearance of discoloration and hyperpigmentation," says Dr. Castilla. "Taken together, tretinoin can help to address both texture and tone."

Is tretinoin more effective than traditional retinol?

It's hard to say whether tretinoin is more effective than retinol. It is indeed more powerful, since "it can activate more receptors in the skin," says Dr. Castilla. "Tretinoin is also already in its active form, whereas retinol and retinaldehyde need to be converted in the body to become active at the receptor." Those conversions act as speed bumps, making retinol less powerful than tretinoin—and, yes, possibly less effective.

However, "while tretinoin may be considered more effective than an over-the counter retinol, ultimately it comes down to tolerability," says Dr. Garshick. That's because tretinoin's potency—stemming from it being pure retinoic acid on your skin, no conversions necessary—gives it greater potential for irritation. If you can't tolerate the redness, flakiness, and dryness, then a retinol may be more effective for your individual skin and concerns.

What is the best form of tretinoin?

Tretinoin comes in several strengths, ranging from 0.015 to 1%. If this is your first time using a prescription-strength retinoid, most prescribers will start you at the lowest concentration (which is either 0.015 or 0.025%, depending on the brand).

Other brands cater the concentration to your experience, skin type, and goals—this is the case with customizable formulas, like Curology—whereas others have preset levels.

Who should use tretinoin?

The ideal candidate for tretinoin is anyone "who is looking to address breakouts, clogged pores, acne scarring, dark spots, fine lines and wrinkles—or someone who is interested in helping to prevent signs of skin aging," says Dr. Garshick.

It's also worth upgrading the tretinoin if you're consistently using an over-the-counter retinoid, such as retinol, but not seeing any results, says Dr. Castilla. If you've used it religiously for 12 weeks and have yet to see an improvement, then she recommends seeking out tretinoin.

Who shouldn't use tretinoin?

As with retinol, "tretinoin shouldn't be used during pregnancy," says Dr. Castilla. While it's generally considered safe to use topical tretinoin while breastfeeding, she recommends talking with your healthcare provider about it first.

This Prescription-Strength Retinol Starts At $15 On Amazon

Adapalene, which is the gentlest in the retinoid family, also has some ability to improve the appearance of sun damage, said board-certified dermatologist Dr. Macrene Alexiades, who is also based in New York.

"Generally speaking, over-the-counter retinol products are suitable for those with mild issues... [T]hose who need a stronger over-the-counter version... Would use adapalene or Differin," a name-brand adapalene product, Alexiades said.

Both Alexiades and Ostad said that, like all retinoids, adapalene has the potential to be drying, so it's best to use just a pea-sized amount on the whole face, only at night, and to pair it with a moisturizer.

Most adapalene products — the best-known of which is Differin — have the same .1% concentration of the ingredient. Ahead, you can shop all of the options we found on Amazon and read some reviewer comments about their effectiveness.

HuffPost may receive a share from purchases made via links on this page. Every item is independently selected by the HuffPost Shopping team. Prices and availability are subject to change.

Teen Acne: Prescription Treatments For Acne

Are over-the-counter acne products not cutting it? The good news is that there are highly effective medicines for tougher teen acne cases. According to the American Academy of Dermatology, virtually anyone's acne, no matter how severe, can be treated.

But the prospect of taking a daily prescription medicine - especially as a teenager -- can raise some concerns for teens and their parents. Will it really work? How long will it be necessary? What are the side effects?

Exactly what causes acne? Acne develops when cells and natural oils block tiny hair follicles in the skin. Bacteria work their way into the plugged-up follicles and start multiplying. When the body's immune cells move in to attack the bacteria, the results of the battle are the classic symptoms of acne -- swelling, redness, and pimples.

Acne medications help by interrupting this process in different ways. Some over-the-counter and prescription acne creams help by unplugging the follicles. Others, such as antibiotics and benzoyl peroxide, kill the bacteria that move into the follicles. The pill isotretinoin reduces oil production, unplugs the follicles, and targets inflammation and acne-causing bacteria. It indirectly affects bacteria by decreasing the sebum they feed on. Clascoterone (Winlevi ) is a topical cream that targets specific acne-causing hormones in the skin that cause extra oil and inflammation.

There is no best acne treatment. Some people do fine using one acne product, although many need a combination to control their teen acne.

For mild to severe acne, a doctor might recommend prescription treatments that are "topical," which means they go on your skin. These treatments might also be used for more severe acne in combination with other medicines.

Topical treatments for teenage acne come in different forms, including creams, lotions, foams, gels, and pads. Some types include:

Topical antibiotics. These acne medicines can kill some of the bacteria on the skin and reduce redness and inflammation. Examples of antibiotics include clindamycin (Cleocin T, Clinda-Derm) and erythromycin (Emgel, Erygel)

Topical anti-androgen. A new class of treatment for acne, this medication targets the hormones that trigger the outbreak. This includes the new medication clascoterone (Winlevi).

Topical retinoids. Retinoid creams are made from vitamin A. They work by unplugging the follicles, which also allows other medicines like topical antibiotics to work better. Examples include adapalene (Differin), tazarotene (Tazorac), and tretinoin (Avita, Retin-A), and trifarotene (Aklief)

Other topical medicines. Some of the medicines that you can find over the counter are available in more potent forms by prescription. These include azelaic acid, benzoyl peroxide, and sulfur-based treatments. They help by reducing swelling and blocking the growth of bacteria.

Some prescription creams include two or more active ingredients.

The typical side effects from these treatments are mild and confined to the skin. They include stinging, redness, irritation, and peeling.

Retinoid creams can make skin more sensitive to sunlight. So when using these treatments, it's important to limit sun exposure, especially between the hours of 10 a.M. And 2 p.M., and apply broad-spectrum sunscreen regularly. Protect exposed skin with a long-sleeved shirt, pants, and a large-brimmed hat. 

For moderate to severe cases, a dermatologist might recommend prescription acne medications taken by mouth instead of -- or in addition to -- topical treatments. Here are some of the types used.

Oral antibiotics. For more severe teen acne, daily antibiotics can help kill bacteria and reduce swelling. These drugs are typically prescribed for periods of six months or less. Over time, the bacteria may become resistant to a specific antibiotic. When that happens, the doctor may switch to a different drug.

The side effects of oral antibiotics depend on the medication, but they can cause problems like upset stomach, dizziness, skin color changes, and sun sensitivity. Tetracycline (Sumycin) can yellow the teeth and affect bone formation, so it's not recommended for children under nine or the last half of a pregnancy. However, the newly approved tetracycline derivative sarecycline (Almirall, Seysara) can be used in children from age 9 and above and you can take it once daily. Doxycycline (Acticlate, Adoxa, Doryx, Monodox, Oracea, Vibra-Tabs, Vibramycin) and minocycline (Dynacin, Minocin, Solodyn) are also not recommended for children under 8 or pregnant women.

Isotretinoin. This is a powerful drug in the retinoid group. It's used for severe or moderate acne that can't be controlled with other treatments. It reduces the amount of oil made by glands in the skin. It also curbs inflammation and reduces clogged hair follicles. Taking it for several months, once or twice a day, can clear most cases of acne.

The most common side effects are dryness of the skin, eyes, mouth, lips, and nose. Other side effects include nosebleeds, achiness, diminished night vision, sun sensitivity, and changes in triglyceride levels and liver function. Severe side effects of isotretinoin are very rare. Since it can cause serious birth defects, women should use two different forms of birth control when taking isotretinoin. People using isotretinoin will need periodic blood tests.

Many teens and their parents are concerned about the possible psychological effects of isotretinoin. What's the connection? Experts say that there have been a number of people using isotretinoin who had severe depression and attempted suicide. But no one knows whether the medicine was really the cause. The fact is that depression is more common in people with acne, regardless of the treatment.

Parents, if you notice that your son or daughter is having mood swings, seeming down or angry, or losing interest in friends or the things that they usually enjoy, schedule an appointment with the doctor.

Hormonal treatments. Teen girls have acne that's linked to hormones called androgens. To treat this sort of acne, a doctor might recommend to women birth control pills or spironolactone (Aldactone). Side effects of hormonal treatments for acne include irregular periods, tender breasts, headaches, blood clots, high blood pressure, and fatigue.

Take the acne treatment as prescribed. It's important to stick to the doctor's acne treatment. Make it a part of the daily routine. Leave the medicine out where you can see it, instead of tucking it away in a medicine cabinet. If it helps, use notes or alarms as reminders.

Stop using other acne treatments. If a doctor has prescribed an acne treatment, don't also use other treatments or home remedies. They're unlikely to help and they could even make the acne worse.

Stick with it. Acne treatment won't work immediately. It can take six to eight weeks before you see some benefit. It may take six months or longer to clear the skin altogether.

Do your part. Follow the doctor's skin care advice, particularly when it comes to cleansing and using moisturizer. Avoid oil-based makeup and hair products, since they can plug up the pores and aggravate acne. And though it can be hard, resist the temptation to pop zits or pick at them - it can lead to infection and scarring. Warm compresses may help to relieve pain and inflammation.

Work with a doctor. If treatment isn't working, don't give up. It may take some time to hit on the right approach. Schedule an appointment with a doctor to discuss other options. Remember: With the right treatment, almost every case of acne can be cured.

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