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Ren Skincare REN Atlantic Kelp Magnesium Bath Oil
Ren Skincare

Ren Skincare REN Atlantic Kelp Magnesium Bath Oil

Efficacy100/100IrritancyHigh
See all ingredients

Works for

Cleansing
Polyglyceryl-3 palmitate, Glyceryl caprylate
Cleanses gently

This product works by removing dirt and oil from the surface of the skin. It uses a combination of mild cleansing agents (glyceryl caprylate, polyglyceryl-3 palmitate) and should be able to cleanse the skin gently. Still keep in mind that any cleansing can disrupt the skin barrier, and most people do not need to cleanse their skin more than once per day.

Polyglyceryl-3 palmitateEffect: High~3.4–5.1%
Glyceryl caprylateEffect: HighAn emollient that can also help water and oil mix together, as well as prevent bacteria growth in products~3.2–4.8%

Can it cause trouble?

Irritancy
9 strong irritants: Rosmarinus officinalis leaf oil, Pelargonium graveolens oil + 7 more — patch-test recommended
High risk
We flagged 11 ingredients with irritancy potential. Severity depends on your sensitivity threshold; the table lists the worst offenders first.
IngredientFunctionIrritationEst. amount
Rosmarinus officinalis leaf oilA plant oil with high content of volatile compounds that can irritate the skin. Can be used as a fragrance. Has anti-bacterial properties and might help neutralize free radicals on the surface of the skinHigh~2.5–3.8%est.
Pelargonium graveolens oilUsed as a fragrance. Can be irritatingHigh~1.8–2.6%est.
Salvia sclarea extractUsed as a fragrance. Can be irritatingHigh~1.4–2.1%est.
ParfumAn aromatic blend of unspecified and possibly irritating ingredientsHigh~0.9–1.35%est.
CitralA fragrance with a lemon scent. A likely irritantHigh~0.15–0.5%est.
CitronellolA fragrance. Can be irritatingHigh~0.1–0.4%est.
GeraniolA fragrance. Can be irritatingHigh~0.05–0.2%est.
LimoneneA common frangrance that can easily irritate skin, especially if exposed to air, light or heatHigh~0.05–0.2%est.
LinaloolA fragrance. Can be irritatingHigh~0.05–0.2%est.
Caprylic/capric triglycerideA good mix of fatty acids that forms a protective layer on the skin. Improves the shelf life of products. Derived from coconut and glycerinMedium~23–34%est.
Plankton extractCan help attract water to the upper layer of the skinMedium~0.3–0.7%est.
Comedogenic
3 ingredients rated 2 or more on the 0–5 pore-clogging scale
3 flagged
These ingredients have a comedogenic rating of 2 or more on a 0–5 scale; the table shows each one's rating. In leave-on products they can clog pores in acne-prone skin.
IngredientFunctionRatingEst. amount
Chlorella protothecoides oilAn emollient. Is unlikely to have additional benefits for the skin3/5~5–7.5%est.
Laminaria digitata extractSeaweed extract that helps the skin to attract water and make it more smooth for touch. Also shows promise of anti-aging properties, but good research is lacking at the moment3/5~0.4–0.9%est.
Plankton extractCan help attract water to the upper layer of the skin3/5~0.3–0.7%est.

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Ingredients

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Caprylic/capric triglyceride~23–34%
Irritant · medium
Irritation risk
Medium
Works for
Moisturizing

A good mix of fatty acids that forms a protective layer on the skin. Improves the shelf life of products. Derived from coconut and glycerin

More about Caprylic/capric triglyceride
Chlorella protothecoides oil~5–7.5%
Comedogenic 3/5
Irritation risk
Low
Comedogenicity
3/5
Works for
Moisturizing

An emollient. Is unlikely to have additional benefits for the skin

More about Chlorella protothecoides oil
Glyceryl caprylate~3.2–4.8%
Formula
Irritation risk
Low
Works for
CleansingMoisturizing

An emollient that can also help water and oil mix together, as well as prevent bacteria growth in products

More about Glyceryl caprylate
Polyglyceryl-3 palmitate~3.4–5.1%
Formula
Irritation risk
Low
Works for
Cleansing
More about Polyglyceryl-3 palmitate
Rosmarinus officinalis leaf oil~2.5–3.8%
Irritant · high
Irritation risk
High
Works for
AntibacterialAnti-oxidation

A plant oil with high content of volatile compounds that can irritate the skin. Can be used as a fragrance. Has anti-bacterial properties and might help neutralize free radicals on the surface of the skin

More about Rosmarinus officinalis leaf oil
Pelargonium graveolens oil~1.8–2.6%
Irritant · high
Irritation risk
High

Used as a fragrance. Can be irritating

More about Pelargonium graveolens oil
Salvia sclarea extract~1.4–2.1%
Irritant · high
Irritation risk
High
Works for
Anti-oxidation

Used as a fragrance. Can be irritating

More about Salvia sclarea extract
Cupressus sempervirens leaf/stem extract~1.2–1.8%
Formula
Irritation risk
Low
More about Cupressus sempervirens leaf/stem extract
Parfum~0.9–1.35%
Irritant · high
Irritation risk
High

An aromatic blend of unspecified and possibly irritating ingredients

More about Parfum
Tocopherol~0.55–1.3%
Formula
Irritation risk
Low
Works for
Anti-oxidationAnti-inflammatoryMoisturizingAnti-aging

Pure form of vitamin E. Can help moisturise and protect the skin from free radicals. Often used to help stabilise other ingredients or the formula itself

More about Tocopherol
Helianthus annuus seed oil~0.55–1.25%
Formula
Irritation risk
Low
Works for
Moisturizing

A great emollient due to its high linoleic acid content. One of the most effective plant oils in helping skin hydration and repairing skin barrier function

More about Helianthus annuus seed oil
Laminaria digitata extract~0.4–0.9%
Comedogenic 3/5
Irritation risk
Low
Comedogenicity
3/5
Works for
MoisturizingAnti-oxidationAnti-aging

Seaweed extract that helps the skin to attract water and make it more smooth for touch. Also shows promise of anti-aging properties, but good research is lacking at the moment

More about Laminaria digitata extract
Plankton extract~0.3–0.7%
Comedogenic 3/5Irritant · medium
Irritation risk
Medium
Comedogenicity
3/5
Works for
Moisturizing

Can help attract water to the upper layer of the skin

More about Plankton extract
Citral~0.15–0.5%
Irritant · high
Irritation risk
High

A fragrance with a lemon scent. A likely irritant

More about Citral
Citronellol~0.1–0.4%
Irritant · high
Irritation risk
High

A fragrance. Can be irritating

More about Citronellol
Geraniol~0.05–0.2%
Irritant · high
Irritation risk
High

A fragrance. Can be irritating

More about Geraniol
Limonene~0.05–0.2%
Irritant · high
Irritation risk
High

A common frangrance that can easily irritate skin, especially if exposed to air, light or heat

More about Limonene
Linalool~0.05–0.2%
Irritant · high
Irritation risk
High

A fragrance. Can be irritating

More about Linalool
Ingredient list view

Caprylic/capric triglyceride, Chlorella protothecoides oil, Glyceryl caprylate, Polyglyceryl-3 palmitate, Rosmarinus officinalis leaf oil, Pelargonium graveolens oil, Salvia sclarea extract, Cupressus sempervirens leaf/stem extract, Parfum, Tocopherol, Helianthus annuus seed oil, Laminaria digitata extract, Plankton extract, Citral, Citronellol, Geraniol, Limonene, Linalool

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Worth comparing, line by line.

Match % combines shared ingredients, the first five ingredients, shared actives and hero ingredients, irritancy (lower counts in the alternative's favour), texture and body area. Only products in the same routine step are compared.

Side-by-side comparison of this product against its closest alternatives
Ren SkincareREN Atlantic Kelp Magnesium Bath OilYOUR PRODUCTNeal's Yard RemediesWild Rose Shower OilSENSORI+Detoxifying and Rejuvenating Toowoomba Carnival Shower OilAromatherapy AssociatesRose Shower Oil
Match—38%35%32%
Price—$23.21$39.81$15.87
Shared key ingredients—4 of 63 of 62 of 6
Key difference—Sea Buckthorn OilPersea Gratissima OilJojoba Oil
Irritancy High High Medium High
Drying alcohol————
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Sources cited in this review

Every concentration estimate and effectiveness label is anchored to one of these 13 studies and safety reviews.

  1. 1
    Assessment report on Rosmarinus officinalis L., aetheroleum and Rosmarinus officinalis L., folium ema.europa.eu
  2. 2
    Screening of plant extracts for antimicrobial activity against bacteria and yeasts with dermatological relevancesciencedirect.com
  3. 3
    Occupational contact dermatitis due to essential oilsonlinelibrary.wiley.com
  4. 4
    The in vitro antimicrobial activity and chemometric modelling of 59 commercial essential oils against pathogens of dermatological relevanceonlinelibrary.wiley.com
  5. 5
    Antimicrobial and Antioxidant Properties of Rosemary and Sage (Rosmarinus officinalis L. and Salvia officinalis L., Lamiaceae) Essential Oilspubs.acs.org
  6. 6
    Chemical Composition, Plant Genetic Differences, Antimicrobial and Antifungal Activity Investigation of the Essential Oil of Rosmarinus officinalis L.pubs.acs.org
Ren Skincare REN Atlantic Kelp Magnesium Bath Oil
Ren SkincareREN Atlantic Kelp Magnesium Bath Oil
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Find on Amazon

As an Amazon Associate, WIMJ earns from qualifying purchases.