Dr. Rachel Nazarian, a board certified dermatologist, speaks to "CBS Mornings" about key ingredients in skincare, forming your routine and how to improve your skin health.

Dr. Rachel Nazarian, a board-certified dermatologist, highlighted four essential ingredients for healthy skin: hyaluronic acid for hydration, vitamin C for antioxidant protection and evening skin tone, retinol or retinoids for collagen stimulation and anti-aging, and sunscreen with at least SPF 30 for broad-spectrum protection. She emphasized that both mineral and chemical sunscreens are safe and effective, and that sunscreen is necessary for all skin tones to prevent skin cancer and premature aging.

Dr. Nazarian also advised against being intimidated by chemical-sounding ingredient names, noting that reputable brands often offer affordable and effective products. She recommended gentle, non-foaming cleansers to avoid stripping the skin's natural barrier, and suggested using lukewarm water for washing. Areas prone to bacteria, such as armpits and groin, may require more direct cleansing, but overall, less soap is better for maintaining skin health.

What key skincare ingredients can help keep your skin healthy?

All right, we are going to talk about skin care, but before we do, we're going to get a little fun in. All right, let's do it. In just in time. Tony, take a look at the screen here. We're going to do a little quiz. How do you say this word? Isohexadecane. That sounds right to me. All right, next one. What do we have? Trithocaprazolanane? Lane? Yeah, yeah, maybe. That's not that. I think so. Okay, so those are not words from the scripts spelling B. They are actual ingredients in products that you use on your skin. Dr. Rachel Nazarian, a board-certified dermatologist, will give us a crash course on what on earth these ingredients do, what they mean, and how to pronounce them. She's here now. Dr. Nazarian, thank you so much. How did I do? How did I do? You passed. All right. This is a pass-fail class, so don't worry. So what are the four ingredients you say we should all be using on our skin? So there's four ingredients that I consider to be somewhat essentials, and you can find them at the drugstore. The first is hyaluronic acid. We sometimes call that HA. HA is a natural sugar found in our skin. It pulls in moisture. It helps with hydration. You'll find it in all kinds of products, gels, creams, lotions. The second is vitamin C. Really, any antioxidant is good, but vitamin C is this powerhouse antioxidant you can find on drugstores very easily, and it's great at help shielding from environmental damage and evening skin tone and pigmentation. The third one is retinol or retinoids. You might have heard of that. It comes from vitamin A. It is great at stimulating collagen and good for anti-aging. And then the fourth, we all know and love. That's our sunscreen. Now, I want everyone to be on a minimum SPF 30 or higher broad-spectrum sunscreen, and the important thing to remember here is there's two different classes of sunscreen. One are the mineral or physicals. They usually start with words like zinc or titanium, and then the second one is your chemical class of sunscreens. They have a little bit more of the chemical-sounding words, you know, avobenzone, oxybenzone. Both classes are great, and both classes are safe. Can you dispel something for me? Because I hear this from my people. I'm black. I don't need sunscreen. I'm fine. I'm friends with the sun. We need sunscreen, correct? We need sunscreen. Anybody can develop skin cancer. It's true. If you have darker skin, you have a little bit more protection against sun because of the natural melanin in your skin, but you still have to protect yourself, and aren't we all aging day by day? Sunscreen helps prevent premature aging as well. So what were the ingredients that Tony had to read? Listen, so number one, I want to tell you, don't be scared by these chemical-sounding names. You know, sometimes they, you know, they may sort of intimidate people at the drugstore, but things that are natural, I know everyone's now looking for natural ingredients. Natural isn't always good for you. I tell my patients all the time, remember poison ivy is natural. Arsenic is natural. Some of these chemical-sounding names are just safe ingredients that help strengthen your skin. So you named four essentials. It sounds like they come in four different products. Maybe you can get it narrowed down to two. It's going to be pricey if you go with a big brand name. Are there ways to find a bargain here? When can you go for the cheaper option and when do you need to actually pay up for the good stuff? The good news here is actually these four product types and ingredients are very affordable and modestly priced. When I say look for big names, we really aren't looking for the expensive brands. What I really mean is something that is just a reputable brand. These brands that follow the science and listen to dermatologists, brands I know you've all heard of, Cetaphil, Gold Bond, Neutrogena, Aveeno, Proactiv. They work very closely with the medical community and they make products that are safe and effective. So last time you were here, you said that we don't need to use as much soap as people actually do. I think about that regularly, I have to say. Why not? Why not so much soap? Well, soap, actually, the job is just to gently cleanse skin. What you're not trying to do is aggressively strip the natural oils from the skin barrier. Once you do that, you actually make your skin more vulnerable to irritation and inflammation. So all the other products that you use after you clean become more irritating when you strip that barrier. Go for a gentle, non-foaming, unscented cleanser. Your skin will be happier, it'll be stronger, and it'll tolerate the rest of the regimen better. And you're talking full body, too? I'm talking full body. The exception, though, Adriana, is that some areas are sort of housing bacteria. They're the bacteria centers, like your armpits and your groin. Those areas, I am okay with people using the soap directly on. Can I just say, people have all kinds of warm water, cold water, medium water, washing their face ideas. What kind of water should you be using? What temperature? Lukewarm. Lukewarm. Lukewarm is best. You don't need so cold, and certainly, hot, hot, hot is not good for your skin. It strips more, and it can actually break blood vessels the more you flush being around hot water. But listen, I get that everyone gets stressed. We love our showers. We relax in the shower these days. If you're having a bad day, you can keep it a little warmer or hotter, but make that the exception, not the daily rule. I love a hot shower. Yeah, all women do. I remember when I took a shower with my wife for the first time, I thought I was burning. I do, I like burn my husband hard. You're talking about showers with knives now? Well, I'm just saying. I know, it's a lot of fun. That sounds great. I've been saying that for a long time. Dr. Rachel Nazarian, thank you very much. I appreciate it.

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