I found several search results related to "Douglas Collection" but they are not all about the same product. Here is the information I found:

• Essential Douglas Collection Essential Delicate Rose Gentle Toner gesichtswasser : This product contains Allantoin, Citric Acid, and other ingredients that can have negative effects on sensitive skin, such as redness, irritation, and dark circles.

• Essential Douglas Collection Essential Radiance Tonic Lotion gesichtswasser : This product contains Citric Acid and Glycerol, which are positive ingredients. However, some of the other ingredients can have a negative effect.

• Douglas Laboratories Hair, Skin & Nail Plus : This product is a vitamin and nutrient supplement designed to support healthy hair, skin, and nails. It contains a variety of vitamins and minerals.

• Douglas Fir Needle Essential Oil : This product is an organic essential oil that is 100% pure and natural. It is certified USDA organic and does not contain any animal ingredients or by-products. It is also compliant with various regulations governing the use of chemicals in products.

• Douglas Mattress : This is a Canadian mattress made of foam. It has a soft firmness rating of 6/10 and is designed to offer balanced support and pressure relief for a variety of sleepers. It contains Elastex and gel foams for bounce and cooling.

• Douglas Laboratories AdrenoMend : This product is a supplement containing ten herbal extracts with adaptogenic properties designed to support healthy, balanced adrenal gland function during stress.

In summary, the search results provide information on various products related to the "Douglas Collection," including toners, supplements, essential oils, and mattresses. The ingredients and materials used in these products vary, and some products have positive and negative effects.