Skin Care Ingredients For Anti Aging
Which skin care ingredients actually work??
We have all heard of magical creams that can remove wrinkles and make us look years younger. These products are often disappointing, not to mention expensive. In this blog we will look at which ingredients actually work and have science backed evidence. This is your guide to buying products that will truly be effective.
See our recent blogs on skin health and skin issues ( the gut-skin axis, skin aging, supplements for skin aging, psoriasis, rosacea, eczema, acne, and athlete’s foot).
In this blog on anti-aging, you will learn which skin care ingredients work to support healthy collagen, elasticity, skin barrier and skin aging.
What is Skin Aging?
Aging is accumulated cellular damage. Collagen production declines, skin loses elasticity, becomes thinner and more fragile and wrinkles, lines, sagging, age spots and dryness appear.
Factors within our control (excessive sun exposure, poor diet, excess sugar intake, poor gut health, dehydration, pollution, smoking, chronic stress and hormonal changes) contribute to skin aging (Woo YR, 2024). If we optimize these factors we can delay skin aging.
Another huge factor is topical products and ingredients. Some are very effective while some are simply expensive.
In the latest research, these 7 skin care ingredients are the best and most effective for anti-aging:
- Retinoids
- Niacinamide
- Alpha-Hydroxy Acids (AHAs)
- Vitamin C & other Antioxidants
- Peptides
- Hyaluronic Acid
- Ceramides
Retinoids & Retinol
Retinoid is the general term for all vitamin A derivatives that are used in skin care. There are different types of retinoids including retinol, tretinoin, retinaldehyde, retinoic acid and retinyl esters, all of which are used in cosmetic products. Retinol is the most common form of vitamin A used in over-the-counter products and is the strongest form available without a prescription. Tretinoin is the strongest form and is available only by prescription.
Retinol products lessen skin aging (Mambwe B, 2025). They are the gold standard for skin rejuvenation (Mambwe B, 2025). They are effective, safe and well-tolerated.
Retinols are used to treat signs of aging; wrinkles, skin roughness and dark spots (Yoham AL, 2025). Retinol upregulates anti-aging genes and collagen (Mambwe B, 2025). They improve skin appearance, increase collagen and elastin production, increase cell turnover and improve pigmentation, skin texture, acne, acne scarring and clogged pores (Mambwe B, 2025). Retinoids use a cellular signaling pathway to promote skin remodeling to improve skin and signs of aging (Mambwe B, 2025). The precise mechanism of how topical retinoids work is not fully understood.
In over-the-counter retinoid products, the retinol concentration ranges between 0.05% and 0.3%. A concentration starting from 0.1% improves the appearance of wrinkles, pigmentation and skin texture, with consistent use (Mambwe B, 2025).
In research:
- Retinoids activate the synthesis of new collagen (Mambwe B, 2025).
- Topical retinoids are an effective way to rejuvenate and improve skin aging (Mambwe B, 2025).
- A 0.05% retinol concentration improved aged skin by increasing skin thickness and elasticity after topical application for 1 year (Mambwe B, 2025).
- A 0.1% retinol concentration is well tolerated, reduces wrinkles and improves skin texture when applied daily for 8 weeks (Mambwe B, 2025).
- Using retinol for 1 year can increase production of hyaluronic acid, which is important for skin aging and is discussed below in this blog (Mambwe B, 2025).
Skin may become irritated with retinoid use but this is often short-lived. There may be mild flaking, dry patches, redness and skin irritation. Eventually the overall integrity of the skin barrier improves. Moisturizers can help with the irritation. People with very sensitive skin or rosacea may not be able to use retinols and should proceed cautiously if trying retinol.
The lower retinol concentration is better tolerated in people with pale skin (Mambwe B, 2025). A 0.3% concentration can provide the skin benefits with less side effects of skin irritation (Mambwe B, 2025).
Niacinamide
Niacinamide helps prevent and even reverse skin aging. Niacinamide is the active form of vitamin B3. It brightens the skin, protects the skin barrier and is anti-aging (Ong RR, 2024).
- Niacinamide is an antioxidant that reduces oxidative stress which ages the skin.
- Niacinamide is anti-inflammatory and can treat inflammatory acne (Marques C, 2024). Inflammation is worsened by oxidative stress and niacinamide is a strong antioxidant that decreases inflammation (Marques C, 2024).
- Niacinamide is antimicrobial, antibacterial, antifungal and antiviral. This makes it ideal for acne treatment as it can fight against Cutibacterium acnes, a bacteria found on the skin in acne (Marques C, 2024).
- Niacinamide can be used topically for acne, eczema, rosacea, psoriasis, wrinkles, sagging skin, texture changes, sensitivity and pigmentation (Ong RR, 2024).
- It increases ceramides, mentioned below, and fatty acid production in the skin to strengthen the skin barrier and reduce dark spots (Marques C, 2024).
- Niacinamide helps maintain elastin in the skin barrier and increases collagen production. By building elastin and collagen, niacinamide improves skin barrier integrity which works to combat skin aging (Marques C, 2024).
Niacinamide is a precursor to NAD+. NAD+ is an antiaging coenzyme, important for cellular energy and DNA repair in the skin. By increasing NAD+ levels, niacinamide can improve skin hydration, strengthen the skin barrier, decrease inflammation, reduce wrinkles and protect against sun damage, oxidative stress and pigmentation (Marques C, 2024). Increasing NAD+ levels through topical products improves collagen and elastin, skin firmness, texture and hydration (Marques C, 2024).
Alpha-Hydroxy Acids (AHAs)
Alpha-hydroxy acids or AHAs are a group of plant and animal-derived acids. They are used in anti-aging cosmetic products and particularly in chemical peels. There are seven types of AHAs used in skincare. The most common ones are glycolic and lactic acids.
AHAs have antiaging benefits for skin (Almeman, 2024). They increase apoptosis (or cell death) in skin cells, increase collagen and elastin synthesis and improve skin texture and glow (Almeman, 2024). AHAs can help treat acne, pigmentation and signs of aging.
Specifically, AHAs exfoliate skin. Exfoliation removes dead skin cells, increases new skin cell generation and helps to brighten skin and improve glow. AHAs increase the synthesis of collagen and elastin. AHAs improve the appearance of lines, wrinkles and dark spots (Almeman, 2024).
AHAs help treat and prevent acne. Exfoliating with AHAs loosens and helps to remove dead skin cells, oil (sebum) and bacteria from clogged pores. Using AHAs regularly can keep pores clear to prevent future clogging and acne breakouts. Skin cell turnover from exfoliating can reduce acne scars. Exfoliating dead skin cells and promoting new skin cell formation brightens skin complexion and increases product absorption (Almeman, 2024).
AHAs can cause mild side effects such as burning, itching and skin irritation. Use a mild AHA product occasionally until skin becomes accustomed and less irritated. The peeling effects of highly-concentrated AHAs make skin more sensitive to UV rays. Be cautious with sun exposure, use sunscreen daily and reapply frequently if using AHAs.
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Vitamin C & Antioxidants
Topical vitamin C helps maintain and improve skin health. It stimulates collagen. Vitamin C is a cofactor for enzymes involved in collagen production. It stimulates collagen synthesis to support skin firmness and elasticity.
Vitamin C is an antioxidant. Vitamin C neutralizes free radicals caused by oxidative stress to prevent collagen degradation. This maintains skin barrier integrity, supports skin structure and reduces the appearance of lines and wrinkles.
In addition to firming the skin and reducing oxidative stress, vitamin C can treat UV damage and improve wrinkles and discoloration (Januszewski J, 2024). Daily topical use of vitamin C for 3 months or more improves the appearance of wrinkles, skin texture and appearance (Enescu CD, 2021).
Vitamin C + other topical antioxidants, like vitamin E, ferulic acid, resveratrol and niacinamide, protect against oxidative stress and sun damage (Enescu CD, 2021). They help improve skin resilience against UV radiation (Woo YR, 2024). Topical antioxidants strengthen the skin barrier which declines with age (Woo YR, 2024).
Peptides
Peptides are short protein chains of 2-100 amino acids. They are used therapeutically for various health conditions, including to improve skin appearance (Park J, 2020).
The effects of cosmetic peptides are comparable to that of retinoids (Griffiths TW, 2023). They stimulate collagen and elastin in the skin (Fernandes A, 2023). This helps to reduce current wrinkles and prevent new ones from forming (Pintea A, 2025). Peptides can restore skin structure, make skin more elastic, firmer and smoother as a result of increasing collagen and elastin (Pintea A, 2025). Peptides enhance skin hydration (Fernandes A, 2023). Using peptides topically for 8 weeks increases collagen and hyaluronic acid (Griffiths TW, 2023).
There are different types of peptides. Signal peptides stimulate collagen production and improve skin elasticity (Pintea A, 2025). Neurotransmitter inhibitor peptides relax facial muscles and minimize expression wrinkles (Pintea A, 2025). Carrier peptides support skin repair. Enzyme inhibitor peptides reduce collagen breakdown to preserve skin integrity (Pintea A, 2025).
Peptides are antioxidant and reduce oxidative stress. UV radiation, toxins, inflammation and other factors create oxidative stress. Peptides reduce this oxidative stress in the skin through different pathways to delay aging (Pintea A, 2025). Peptides increase wound healing and tissue regeneration (Pintea A, 2025).
Peptide combinations significantly improve the appearance of wrinkles, skin roughness and repair skin (Pintea A, 2025):
- GHK is a specific peptide that stimulates collagen production (Griffiths TW, 2023). It is combined with a copper peptide to enhance its effects (Griffiths TW, 2023). Copper is a carrier peptide that supports wound healing (Pintea A, 2025).
- Peptides + topical vitamin C decrease wrinkles and skin pigmentation (Griffiths TW, 2023).
- Some peptides act like Botox (Griffiths TW, 2023). They reduce wrinkle depth and increase collagen synthesis (Griffiths TW, 2023). Peptides are less effective than Botox but can be a less invasive and non-toxic alternative to Botox (Griffiths TW, 2023).
Peptides improve and enhance the effects of other ingredients like hyaluronic acid or vitamin E. When combined with other active ingredients, they can create a synergistic effect:
- Peptides + hyaluronic acid increases hydration and skin repair.
- Peptides + zinc sulfate is antimicrobial and increases wound healing.
- Peptides + vitamin E improves skin structure and reduces oxidative damage (Pintea A, 2025).
We have previously written about a specific peptide combination and is antiaging effects on skin in an older blog here.
Hyaluronic Acid
Hyaluronic acid is found in the skin, eyes and joints. It helps maintain tissue hydration, structural organization and intercellular communication. Hyaluronic acid or HA binds moisture to retain water in the skin. It improves moisture, repairs wounds, resolves inflammation and regenerates tissue (Karabat M, 2025). As an anti-inflammatory it reduces oxidative stress to help repair tissue damage to support overall skin health (Karabat M, 2025). HA increases collagen and elastin production to support skin firmness. HA decreases with age, which increases skin moisture loss and decreases skin firmness (Mambwe B, 2025).
Topical HA provides immediate, surface-level hydration and plumps skin. It does not get to deeper layers of the skin or wrinkles. Oral HA supplements or eating HA foods can help improve hydration, elasticity and wrinkles on a systemic level. These effects may take longer to appear.
Topical + oral HA provides both the topical and deeper benefits. Bone broth and organ meats (i.e. liver) have the highest HA content. Other foods support hyaluronic acid production; oranges, almonds, kale, leafy greens, carrots and sweet potatoes.
Ceramides
Ceramide are fats that make up about 50% of the skin’s lipid content (Yong TK, 2025). Ceramides repair the skin barrier, prevent water loss and protect skin. They hydrate skin, control inflammation and improve skin appearance (Yong TK, 2025).
Topical ceramides improve skin barrier function. They act as messenger molecules to regulate cellular processes like cell differentiation and apoptosis. They are involved in skin cell proliferation and differentiation, skin immunity and skin diseases (Yong TK, 2025)
Natural ceramides are made from animal sources. Phyto or plant ceramides are made from plant sources. Synthetic ceramides are man-made and often used in skin care products. Ceramides decline with age. So synthetic ceramides are added to moisturizers, serums and other products to give skin more ceramides and their benefits. Both topical and oral ceramides are effective and safe (Yong TK, 2025).
How to Use the Different Ingredients?
Introduce the various ingredients like vitamin C, retinol or AHAs one at a time to see how skin reacts. There can be some mild irritations so go slow and use small amounts at first.
Use Vitamin C (and other antioxidants) in the morning. Use with sunscreen to protect against UV damage.
Use retinol in the evening before bed. Retinol can increase sensitivity to the sun, so do not use it in the morning. With retinol, start low and slow to avoid skin irritation. Use 1 – 3 times a week before increasing to daily or every other day. Follow with a moisturizer.
Peptides can be used morning or evening. If at night, then use peptides on a non-retinol night. If daytime, layer peptides with vitamin C/ antioxidants then sunscreen.
Niacinamide can be used morning and night with other products. If using retinoids in the evening then use niacinamide in the morning before a moisturizer. Niacinamide can be used with vitamin C and hyaluronic acid. Vitamin C penetrates best when applied first. Then use niacinamide to reinforce the skin barrier and reduce potential irritation.
It takes time to see results so consistent use is important to see visible improvements.
Do you think there are any ingredients we have overlooked? If so, let us know!
If you are interested in optimizing your skin health to age well or need help with other skin issues then get in touch with us at the Medicine with Heart clinic. We can help you to best manage and optimize your skin health!
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