Poor Dash detergent, just another brand from P&G that got lost in the bewildering and vast array of laundry products offered. It languished no matter what P&G did to revive brand before finally being discontinued. In Europe P&G sold brand to Dalli Werke back in 2013 IIRC. Not sure what happened to North American rights.
Dash's claim to fame (once it switched from soap to detergent) was it's low sudsing properties. As automatic washing machines began to displace other methods, and in particular new H-axis washers (Bendix, Westinghouse, and others) this was Dash's main strength.
Dash also was concentrated, and by 1970's or so gained enzyme cleaning power. Both properties again (low sudsing and concentration) were big selling points.
As wont to happen repeatedly with P&G, technology introduced with lower tier brands was refined, improved and made its way into P&G's top shelf product; Tide.
Tide got enzymes (XK), then became concentrated (Ultra Tide), finally (relatively) low sudsing. Increasingly poor Dash became middle shelf then in last days "bargain" brand.
P&G came out with Dash liquid detergent (lemon fresh), which seemed to be new niche, fragrance, odor removal and value for money. Notice by 1990 this Dash commercial speaks about "saving money", etc... Claims about "low sudsing" are all but gone.
https://www.youtube.com/watch?v=alJYFcHk8SI
https://www.youtube.com/watch?v=yT768QmZzMk
You know a product or brand isn't long for this world when boxes/containers have words like "new low price" " or some really low suggested retail price. That is all marketing and promotion meant to target the housewife (or whoever) who is price sensitive. You've never in your life seen P&G put such wording on containers of Tide detergent. In fact it's only been of late Tide in any form went on special offer quite regularly.
https://www.pinterest.com/pin/132434045275586842/