References
Where the skin care information in Dewpoint comes from. Each source was opened and checked against what the app says it supports. General skincare information, not medical advice.
Reference 1 · Clinical practice guideline
Reynolds RV, Yeung H, Cheng CE, et al. Guidelines of care for the management of acne vulgaris. J Am Acad Dermatol. 2024;90(5):1006.e1–1006.e30.
- Cited in Ingredient evidence: benzoyl peroxide, adapalene, tretinoin, azelaic acid, salicylic acid, tea tree oil
- Cited in Skin basics: Sunscreen, Acne basics, Dark marks after breakouts, Pregnancy and skin care, Eating and stress
- Cited in Your routine, step by step
Reference 2 · Expert consensus (two Delphi rounds, 62 dermatologists at 43 centers)
Alvarez GV, Kang BY, Richmond AM, et al. Skincare ingredients recommended by cosmetic dermatologists: a Delphi consensus study. J Am Acad Dermatol. 2025;93(6):1509–1525.
- Cited in Ingredient evidence: benzoyl peroxide, adapalene, tretinoin, ceramides, hyaluronic acid, l ascorbic acid, azelaic acid, niacinamide
- Cited in Skin basics: Sunscreen, Moisturisers and the skin barrier, Dark marks after breakouts
- Cited in Your routine, step by step
Reference 3 · Cochrane systematic review (49 trials, 3,880 participants)
Liu H, Yu H, Xia J, et al. Topical azelaic acid, salicylic acid, nicotinamide, sulphur, zinc and fruit acid (alpha-hydroxy acid) for acne. Cochrane Database Syst Rev. 2020;5:CD011368.
- Cited in Ingredient evidence: azelaic acid, salicylic acid
Reference 4 · Cochrane systematic review (120 trials, 29,592 participants)
Yang Z, Zhang Y, Lazic Mosler E, et al. Topical benzoyl peroxide for acne. Cochrane Database Syst Rev. 2020;3:CD011154.
- Cited in Ingredient evidence: benzoyl peroxide
- Cited in Skin basics: Acne basics
Reference 5 · Systematic review
Althwanay A, AlEdani EM, Kaur H, et al. Efficacy of topical treatments in the management of mild-to-moderate acne vulgaris: a systematic review. Cureus. 2024;16(4):e57909.
- Cited in Ingredient evidence: niacinamide
- Cited in Your routine, step by step
Reference 6 · Systematic review of 9 randomised trials
Spierings NMK. Evidence for the efficacy of over-the-counter vitamin A cosmetic products in the improvement of facial skin aging: a systematic review. J Clin Aesthet Dermatol. 2021;14(9):33–40.
- Cited in Ingredient evidence: retinol, retinaldehyde
- Cited in Your routine, step by step
Reference 7 · Patient information, American Academy of Dermatology
American Academy of Dermatology. Sunscreen FAQs.
Page dated 11 February 2025; read 19 October 2026.
- Cited in What each step is for: Sunscreen
- Cited in Skin basics: Sunscreen, Dark marks after breakouts
- Cited in Your routine, step by step
Reference 8 · Patient information, American Academy of Dermatology
American Academy of Dermatology. Practice safe sun.
Page dated 11 April 2024; read 19 October 2026.
- Cited in Skin basics: Sun
Reference 9 · Patient information, American Academy of Dermatology
American Academy of Dermatology. 10 skin care secrets for healthier-looking skin.
Page dated 29 October 2024; read 19 October 2026.
- Cited in What each step is for: Cleanser
- Cited in Skin basics: Washing, Dark marks after breakouts, Smoking, Eating and stress, When to see a dermatologist
- Cited in Your routine, step by step
Reference 10 · Patient information, American Academy of Dermatology
American Academy of Dermatology. Skin care tips dermatologists use.
Page dated 29 October 2024; read 19 October 2026.
- Cited in Skin basics: Eating and stress
Reference 11 · Patient information, American Academy of Dermatology
American Academy of Dermatology. 11 ways to reduce premature skin aging.
Page dated 24 February 2021; read 19 October 2026.
- Cited in Skin basics: Smoking, Eating and stress
Reference 12 · Patient information, American Academy of Dermatology
American Academy of Dermatology. Acne: tips for managing.
Page dated 16 November 2022; read 19 October 2026.
- Cited in What each step is for: Cleanser
- Cited in Skin basics: Washing, Acne basics
- Cited in Your routine, step by step
Reference 13 · Patient information, American Academy of Dermatology
American Academy of Dermatology. 9 things to try when acne won't clear.
Page dated 12 September 2023; read 19 October 2026.
- Cited in Skin basics: Acne basics, When to see a dermatologist
- Cited in Your routine, step by step
Reference 14 · Patient information, American Academy of Dermatology
American Academy of Dermatology. Dermatologists' top tips for relieving dry skin.
Page dated 2 January 2026; read 19 October 2026.
- Cited in What each step is for: Moisturiser
- Cited in Skin basics: Washing, Moisturisers and the skin barrier
- Cited in Your routine, step by step
Reference 15 · Patient information, American Academy of Dermatology
American Academy of Dermatology. 10 skin care habits that can worsen acne.
Page dated not shown on the page (copyright 2026); read 19 October 2026.
- Cited in Skin basics: Acne basics, Dark marks after breakouts
Reference 16 · Patient information, American Academy of Dermatology
American Academy of Dermatology. Dermatologist-approved pregnancy skin care.
Page dated 26 June 2025; read 19 October 2026.
- Cited in Skin basics: Pregnancy and skin care
Reference 17 · Patient information, American Academy of Dermatology
American Academy of Dermatology. Is any acne treatment safe to use during pregnancy?
Page dated not shown on the page (copyright 2026); read 19 October 2026.
- Cited in Skin basics: Pregnancy and skin care
Reference 18 · Narrative review (no formal evidence grading)
Ly S, Kamal K, Manjaly P, Barbieri JS, Mostaghimi A. Treatment of acne vulgaris during pregnancy and lactation: a narrative review. Dermatol Ther (Heidelb). 2023;13(1):115–130.
- Cited in Skin basics: Pregnancy and skin care
Reference 19 · Expert consensus (Delphi, 10 dermatologists)
Goh CL, Wu Y, Welsh B, et al. Expert consensus on holistic skin care routine: focus on acne, rosacea, atopic dermatitis, and sensitive skin syndrome. J Cosmet Dermatol. 2023;22:45–54.
Funded by Galderma; the authors have served as Galderma advisers. A small panel, so read it as expert opinion.
- Cited in Skin basics: Sunscreen, Moisturisers and the skin barrier, Acne basics, Dark marks after breakouts
- Cited in Your routine, step by step
Reference 20 · International expert consensus (evidence rated low to moderate by its authors)
Thiboutot D, Layton AM, Traore I, et al. International expert consensus recommendations for the use of dermocosmetics in acne. J Eur Acad Dermatol Venereol. 2025;39:952–966.
Funded by L’Oréal Dermatological Beauty and La Roche-Posay Laboratoire Dermatologique.
- Cited in Skin basics: Dark marks after breakouts
- Cited in Your routine, step by step
Reference 21 · Narrative review (no formal evidence grading)
Almeman AA. Evaluating the efficacy and safety of alpha-hydroxy acids in dermatological practice: a comprehensive clinical and legal review. Clin Cosmet Investig Dermatol. 2024;17:1661–1685.
- Cited in Skin basics: Sunscreen
- Cited in Your routine, step by step